diff --git a/LICENSE b/LICENSE
index f709c9ad7c1..2249594da08 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,7 +1,7 @@
 License for Sphinx
 ==================
 
-Copyright (c) 2007-2020 by the Sphinx team (see AUTHORS file).
+Copyright (c) 2007-2021 by the Sphinx team (see AUTHORS file).
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/doc/conf.py b/doc/conf.py
index b995cca0832..9f018bc7b47 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -14,7 +14,7 @@
 exclude_patterns = ['_build']
 
 project = 'Sphinx'
-copyright = '2007-2020, Georg Brandl and the Sphinx team'
+copyright = '2007-2021, Georg Brandl and the Sphinx team'
 version = sphinx.__display_version__
 release = version
 show_authors = True
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index cc1cb3fe146..11d4b1c9e71 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -4,7 +4,7 @@
 
     The Sphinx documentation toolchain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/__main__.py b/sphinx/__main__.py
index 5da409015fb..6192f52ae2a 100644
--- a/sphinx/__main__.py
+++ b/sphinx/__main__.py
@@ -4,7 +4,7 @@
 
     The Sphinx documentation toolchain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/addnodes.py b/sphinx/addnodes.py
index 33503bb0840..5f371e46bfe 100644
--- a/sphinx/addnodes.py
+++ b/sphinx/addnodes.py
@@ -4,7 +4,7 @@
 
     Additional docutils nodes.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/application.py b/sphinx/application.py
index 5bdccdbb1bc..2253ce306fa 100644
--- a/sphinx/application.py
+++ b/sphinx/application.py
@@ -6,7 +6,7 @@
 
     Gracefully adapted from the TextPress system by Armin.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/__init__.py b/sphinx/builders/__init__.py
index b2cae7f47b0..58030bb6c88 100644
--- a/sphinx/builders/__init__.py
+++ b/sphinx/builders/__init__.py
@@ -4,7 +4,7 @@
 
     Builder superclass for all builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/_epub_base.py b/sphinx/builders/_epub_base.py
index 9751fae809e..7df3f8df572 100644
--- a/sphinx/builders/_epub_base.py
+++ b/sphinx/builders/_epub_base.py
@@ -4,7 +4,7 @@
 
     Base class of epub2/epub3 builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/applehelp.py b/sphinx/builders/applehelp.py
index 08669a8afa0..bfc8c8dc8a1 100644
--- a/sphinx/builders/applehelp.py
+++ b/sphinx/builders/applehelp.py
@@ -4,7 +4,7 @@
 
     Build Apple help books.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/changes.py b/sphinx/builders/changes.py
index ea3a778fc79..87dd03fb84a 100644
--- a/sphinx/builders/changes.py
+++ b/sphinx/builders/changes.py
@@ -4,7 +4,7 @@
 
     Changelog builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/devhelp.py b/sphinx/builders/devhelp.py
index f14e3a2dac7..9625b62f470 100644
--- a/sphinx/builders/devhelp.py
+++ b/sphinx/builders/devhelp.py
@@ -6,7 +6,7 @@
 
     .. _Devhelp: https://wiki.gnome.org/Apps/Devhelp
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/dirhtml.py b/sphinx/builders/dirhtml.py
index 6fab8cf82f0..5e6b1725987 100644
--- a/sphinx/builders/dirhtml.py
+++ b/sphinx/builders/dirhtml.py
@@ -4,7 +4,7 @@
 
     Directory HTML builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/dummy.py b/sphinx/builders/dummy.py
index 33d2506ac22..722e70d1c45 100644
--- a/sphinx/builders/dummy.py
+++ b/sphinx/builders/dummy.py
@@ -4,7 +4,7 @@
 
     Do syntax checks, but no writing.
 
-    :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/epub3.py b/sphinx/builders/epub3.py
index cb2f2dbd6a5..d1cf64eb3ec 100644
--- a/sphinx/builders/epub3.py
+++ b/sphinx/builders/epub3.py
@@ -5,7 +5,7 @@
     Build epub3 files.
     Originally derived from epub.py.
 
-    :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/gettext.py b/sphinx/builders/gettext.py
index 0056184ff81..75c95c0bc6d 100644
--- a/sphinx/builders/gettext.py
+++ b/sphinx/builders/gettext.py
@@ -4,7 +4,7 @@
 
     The MessageCatalogBuilder class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/html/__init__.py b/sphinx/builders/html/__init__.py
index 641d0eda2ca..2c96ede3288 100644
--- a/sphinx/builders/html/__init__.py
+++ b/sphinx/builders/html/__init__.py
@@ -4,7 +4,7 @@
 
     Several HTML builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/html/transforms.py b/sphinx/builders/html/transforms.py
index c91da57e993..e0b3f6e089f 100644
--- a/sphinx/builders/html/transforms.py
+++ b/sphinx/builders/html/transforms.py
@@ -4,7 +4,7 @@
 
     Transforms for HTML builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/htmlhelp.py b/sphinx/builders/htmlhelp.py
index 642ae7da603..08719712ce8 100644
--- a/sphinx/builders/htmlhelp.py
+++ b/sphinx/builders/htmlhelp.py
@@ -5,7 +5,7 @@
     Build HTML help support files.
     Parts adapted from Python's Doc/tools/prechm.py.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/latex/__init__.py b/sphinx/builders/latex/__init__.py
index 77825f0eaec..5c7a7412ac9 100644
--- a/sphinx/builders/latex/__init__.py
+++ b/sphinx/builders/latex/__init__.py
@@ -4,7 +4,7 @@
 
     LaTeX builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/latex/constants.py b/sphinx/builders/latex/constants.py
index aab64c67981..0b20c7cef75 100644
--- a/sphinx/builders/latex/constants.py
+++ b/sphinx/builders/latex/constants.py
@@ -4,7 +4,7 @@
 
     consntants for LaTeX builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/latex/nodes.py b/sphinx/builders/latex/nodes.py
index e6b1e5aee3f..eaed6b862e4 100644
--- a/sphinx/builders/latex/nodes.py
+++ b/sphinx/builders/latex/nodes.py
@@ -4,7 +4,7 @@
 
     Additional nodes for LaTeX writer.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/latex/theming.py b/sphinx/builders/latex/theming.py
index 130bded4a1a..5af79e8a234 100644
--- a/sphinx/builders/latex/theming.py
+++ b/sphinx/builders/latex/theming.py
@@ -4,7 +4,7 @@
 
     Theming support for LaTeX builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/latex/transforms.py b/sphinx/builders/latex/transforms.py
index 5b8370d6c80..402cc3fe5e6 100644
--- a/sphinx/builders/latex/transforms.py
+++ b/sphinx/builders/latex/transforms.py
@@ -4,7 +4,7 @@
 
     Transforms for LaTeX builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/latex/util.py b/sphinx/builders/latex/util.py
index 0e3eb739dca..4f2391c4ece 100644
--- a/sphinx/builders/latex/util.py
+++ b/sphinx/builders/latex/util.py
@@ -4,7 +4,7 @@
 
     Utilities for LaTeX builder.
 
-    :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/linkcheck.py b/sphinx/builders/linkcheck.py
index 3be88790248..cfcc182e1d0 100644
--- a/sphinx/builders/linkcheck.py
+++ b/sphinx/builders/linkcheck.py
@@ -4,7 +4,7 @@
 
     The CheckExternalLinksBuilder class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/manpage.py b/sphinx/builders/manpage.py
index b5e8c77cb15..292f495de6d 100644
--- a/sphinx/builders/manpage.py
+++ b/sphinx/builders/manpage.py
@@ -4,7 +4,7 @@
 
     Manual pages builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/qthelp.py b/sphinx/builders/qthelp.py
index a1fe446669b..c5219dd7595 100644
--- a/sphinx/builders/qthelp.py
+++ b/sphinx/builders/qthelp.py
@@ -4,7 +4,7 @@
 
     Build input files for the Qt collection generator.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/singlehtml.py b/sphinx/builders/singlehtml.py
index d8ab978ed42..2e72887e376 100644
--- a/sphinx/builders/singlehtml.py
+++ b/sphinx/builders/singlehtml.py
@@ -4,7 +4,7 @@
 
     Single HTML builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/texinfo.py b/sphinx/builders/texinfo.py
index 345934bd414..0c2d3e01485 100644
--- a/sphinx/builders/texinfo.py
+++ b/sphinx/builders/texinfo.py
@@ -4,7 +4,7 @@
 
     Texinfo builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/text.py b/sphinx/builders/text.py
index 463f4bc55f1..ae770818c17 100644
--- a/sphinx/builders/text.py
+++ b/sphinx/builders/text.py
@@ -4,7 +4,7 @@
 
     Plain-text Sphinx builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/builders/xml.py b/sphinx/builders/xml.py
index c31c6d79907..1b051119b59 100644
--- a/sphinx/builders/xml.py
+++ b/sphinx/builders/xml.py
@@ -4,7 +4,7 @@
 
     Docutils-native XML and pseudo-XML builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/cmd/__init__.py b/sphinx/cmd/__init__.py
index 33fbf747b55..583e50ed792 100644
--- a/sphinx/cmd/__init__.py
+++ b/sphinx/cmd/__init__.py
@@ -4,6 +4,6 @@
 
     Modules for command line executables.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
diff --git a/sphinx/cmd/build.py b/sphinx/cmd/build.py
index f75b13fc818..32a89eb2994 100644
--- a/sphinx/cmd/build.py
+++ b/sphinx/cmd/build.py
@@ -4,7 +4,7 @@
 
     Build documentation from a provided source.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/cmd/make_mode.py b/sphinx/cmd/make_mode.py
index 9043868e150..aaa40fba0fd 100644
--- a/sphinx/cmd/make_mode.py
+++ b/sphinx/cmd/make_mode.py
@@ -10,7 +10,7 @@
     This is in its own module so that importing it is fast.  It should not
     import the main Sphinx modules (like sphinx.applications, sphinx.builders).
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/cmd/quickstart.py b/sphinx/cmd/quickstart.py
index f9def265613..7d1c48f315c 100644
--- a/sphinx/cmd/quickstart.py
+++ b/sphinx/cmd/quickstart.py
@@ -4,7 +4,7 @@
 
     Quickly setup documentation source to work with Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/config.py b/sphinx/config.py
index 13159d2d2b2..8517fb4e448 100644
--- a/sphinx/config.py
+++ b/sphinx/config.py
@@ -4,7 +4,7 @@
 
     Build configuration file handling.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/deprecation.py b/sphinx/deprecation.py
index ee094871d1f..161d7bcacf9 100644
--- a/sphinx/deprecation.py
+++ b/sphinx/deprecation.py
@@ -4,7 +4,7 @@
 
     Sphinx deprecation classes and utilities.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/directives/__init__.py b/sphinx/directives/__init__.py
index ecfbbd69d60..592921535ec 100644
--- a/sphinx/directives/__init__.py
+++ b/sphinx/directives/__init__.py
@@ -4,7 +4,7 @@
 
     Handlers for additional ReST directives.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/directives/code.py b/sphinx/directives/code.py
index df193017d34..10011a324eb 100644
--- a/sphinx/directives/code.py
+++ b/sphinx/directives/code.py
@@ -2,7 +2,7 @@
     sphinx.directives.code
     ~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/directives/other.py b/sphinx/directives/other.py
index 8158f56a897..9325cbe4f97 100644
--- a/sphinx/directives/other.py
+++ b/sphinx/directives/other.py
@@ -2,7 +2,7 @@
     sphinx.directives.other
     ~~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/directives/patches.py b/sphinx/directives/patches.py
index acb79f6365c..1eae6d0c803 100644
--- a/sphinx/directives/patches.py
+++ b/sphinx/directives/patches.py
@@ -2,7 +2,7 @@
     sphinx.directives.patches
     ~~~~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/__init__.py b/sphinx/domains/__init__.py
index c351a30c2a6..60142f584db 100644
--- a/sphinx/domains/__init__.py
+++ b/sphinx/domains/__init__.py
@@ -5,7 +5,7 @@
     Support for domains, which are groupings of description directives
     and roles describing e.g. constructs of one programming language.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/c.py b/sphinx/domains/c.py
index 38b81e3fa6f..87f115c4a9b 100644
--- a/sphinx/domains/c.py
+++ b/sphinx/domains/c.py
@@ -4,7 +4,7 @@
 
     The C language domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/changeset.py b/sphinx/domains/changeset.py
index d51e2f1a199..ba323b72928 100644
--- a/sphinx/domains/changeset.py
+++ b/sphinx/domains/changeset.py
@@ -4,7 +4,7 @@
 
     The changeset domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/citation.py b/sphinx/domains/citation.py
index 9546211d561..1ceb5303732 100644
--- a/sphinx/domains/citation.py
+++ b/sphinx/domains/citation.py
@@ -4,7 +4,7 @@
 
     The citation domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/cpp.py b/sphinx/domains/cpp.py
index cb0ee89e86c..389630a32cd 100644
--- a/sphinx/domains/cpp.py
+++ b/sphinx/domains/cpp.py
@@ -4,7 +4,7 @@
 
     The C++ language domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/index.py b/sphinx/domains/index.py
index 552b46cf988..4a91d6ad1e3 100644
--- a/sphinx/domains/index.py
+++ b/sphinx/domains/index.py
@@ -4,7 +4,7 @@
 
     The index domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/javascript.py b/sphinx/domains/javascript.py
index 6a431540c24..a4b2eca2e72 100644
--- a/sphinx/domains/javascript.py
+++ b/sphinx/domains/javascript.py
@@ -4,7 +4,7 @@
 
     The JavaScript domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/math.py b/sphinx/domains/math.py
index a2f4bd964f8..6bd93e7b59a 100644
--- a/sphinx/domains/math.py
+++ b/sphinx/domains/math.py
@@ -4,7 +4,7 @@
 
     The math domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/python.py b/sphinx/domains/python.py
index c4d134d0874..dff4f9580c8 100644
--- a/sphinx/domains/python.py
+++ b/sphinx/domains/python.py
@@ -4,7 +4,7 @@
 
     The Python domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/rst.py b/sphinx/domains/rst.py
index bc9ffda07b5..0539197bcd0 100644
--- a/sphinx/domains/rst.py
+++ b/sphinx/domains/rst.py
@@ -4,7 +4,7 @@
 
     The reStructuredText domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/domains/std.py b/sphinx/domains/std.py
index e4285b1aef7..bdce2406e8c 100644
--- a/sphinx/domains/std.py
+++ b/sphinx/domains/std.py
@@ -4,7 +4,7 @@
 
     The standard domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/__init__.py b/sphinx/environment/__init__.py
index d52e895beea..be5e52f497e 100644
--- a/sphinx/environment/__init__.py
+++ b/sphinx/environment/__init__.py
@@ -4,7 +4,7 @@
 
     Global creation environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/adapters/__init__.py b/sphinx/environment/adapters/__init__.py
index c9cde6364f7..1e763cb01b8 100644
--- a/sphinx/environment/adapters/__init__.py
+++ b/sphinx/environment/adapters/__init__.py
@@ -4,6 +4,6 @@
 
     Sphinx environment adapters
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
diff --git a/sphinx/environment/adapters/asset.py b/sphinx/environment/adapters/asset.py
index 38e4eb064cc..f16a5f7d38b 100644
--- a/sphinx/environment/adapters/asset.py
+++ b/sphinx/environment/adapters/asset.py
@@ -4,7 +4,7 @@
 
     Assets adapter for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/adapters/indexentries.py b/sphinx/environment/adapters/indexentries.py
index 427024a0069..e662bfe4a5e 100644
--- a/sphinx/environment/adapters/indexentries.py
+++ b/sphinx/environment/adapters/indexentries.py
@@ -4,7 +4,7 @@
 
     Index entries adapters for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/adapters/toctree.py b/sphinx/environment/adapters/toctree.py
index c49da5637e1..182eb956f68 100644
--- a/sphinx/environment/adapters/toctree.py
+++ b/sphinx/environment/adapters/toctree.py
@@ -4,7 +4,7 @@
 
     Toctree adapter for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/__init__.py b/sphinx/environment/collectors/__init__.py
index 53e3a1c7274..4b7ac3472d8 100644
--- a/sphinx/environment/collectors/__init__.py
+++ b/sphinx/environment/collectors/__init__.py
@@ -4,7 +4,7 @@
 
     The data collector components for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/asset.py b/sphinx/environment/collectors/asset.py
index 7f913ebbc23..b8d7ae4c0f3 100644
--- a/sphinx/environment/collectors/asset.py
+++ b/sphinx/environment/collectors/asset.py
@@ -4,7 +4,7 @@
 
     The image collector for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/dependencies.py b/sphinx/environment/collectors/dependencies.py
index cc0af037e43..cd8de918f8c 100644
--- a/sphinx/environment/collectors/dependencies.py
+++ b/sphinx/environment/collectors/dependencies.py
@@ -4,7 +4,7 @@
 
     The dependencies collector components for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/indexentries.py b/sphinx/environment/collectors/indexentries.py
index 8c60fa98536..351cdc2de02 100644
--- a/sphinx/environment/collectors/indexentries.py
+++ b/sphinx/environment/collectors/indexentries.py
@@ -4,7 +4,7 @@
 
     Index entries collector for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/metadata.py b/sphinx/environment/collectors/metadata.py
index ef872759be2..7b3628c9afe 100644
--- a/sphinx/environment/collectors/metadata.py
+++ b/sphinx/environment/collectors/metadata.py
@@ -4,7 +4,7 @@
 
     The metadata collector components for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/title.py b/sphinx/environment/collectors/title.py
index 10cd6c5b060..5225155e87e 100644
--- a/sphinx/environment/collectors/title.py
+++ b/sphinx/environment/collectors/title.py
@@ -4,7 +4,7 @@
 
     The title collector components for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/environment/collectors/toctree.py b/sphinx/environment/collectors/toctree.py
index 14ff4ed7462..772451c5635 100644
--- a/sphinx/environment/collectors/toctree.py
+++ b/sphinx/environment/collectors/toctree.py
@@ -4,7 +4,7 @@
 
     Toctree collector for sphinx.environment.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/errors.py b/sphinx/errors.py
index d9a83712c0d..c632d8dbc86 100644
--- a/sphinx/errors.py
+++ b/sphinx/errors.py
@@ -5,7 +5,7 @@
     Contains SphinxError and a few subclasses (in an extra module to avoid
     circular import problems).
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/events.py b/sphinx/events.py
index c02d6414ef1..806a6e55dbe 100644
--- a/sphinx/events.py
+++ b/sphinx/events.py
@@ -6,7 +6,7 @@
 
     Gracefully adapted from the TextPress system by Armin.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/__init__.py b/sphinx/ext/__init__.py
index 4f4fd012711..80c18574186 100644
--- a/sphinx/ext/__init__.py
+++ b/sphinx/ext/__init__.py
@@ -4,6 +4,6 @@
 
     Contains Sphinx features not activated by default.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
diff --git a/sphinx/ext/apidoc.py b/sphinx/ext/apidoc.py
index b016046179a..7f7d2848ed9 100644
--- a/sphinx/ext/apidoc.py
+++ b/sphinx/ext/apidoc.py
@@ -10,7 +10,7 @@
     Copyright 2008 Société des arts technologiques (SAT),
     https://sat.qc.ca/
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/__init__.py b/sphinx/ext/autodoc/__init__.py
index b481cf25435..54e91a1cd23 100644
--- a/sphinx/ext/autodoc/__init__.py
+++ b/sphinx/ext/autodoc/__init__.py
@@ -6,7 +6,7 @@
     the doctree, thus avoiding duplication between docstrings and documentation
     for those who like elaborate docstrings.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/deprecated.py b/sphinx/ext/autodoc/deprecated.py
index 5541a7a91fa..80a94f0eacf 100644
--- a/sphinx/ext/autodoc/deprecated.py
+++ b/sphinx/ext/autodoc/deprecated.py
@@ -4,7 +4,7 @@
 
     The deprecated Documenters for autodoc.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/directive.py b/sphinx/ext/autodoc/directive.py
index 9a3428f5d5d..e2a669e1468 100644
--- a/sphinx/ext/autodoc/directive.py
+++ b/sphinx/ext/autodoc/directive.py
@@ -2,7 +2,7 @@
     sphinx.ext.autodoc.directive
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2017 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/importer.py b/sphinx/ext/autodoc/importer.py
index 1c5ea979e60..89aab8f0eac 100644
--- a/sphinx/ext/autodoc/importer.py
+++ b/sphinx/ext/autodoc/importer.py
@@ -4,7 +4,7 @@
 
     Importer utilities for autodoc
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/mock.py b/sphinx/ext/autodoc/mock.py
index 3b49918562a..381848fc120 100644
--- a/sphinx/ext/autodoc/mock.py
+++ b/sphinx/ext/autodoc/mock.py
@@ -4,7 +4,7 @@
 
     mock for autodoc
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/type_comment.py b/sphinx/ext/autodoc/type_comment.py
index debbc14428a..4db13c695c8 100644
--- a/sphinx/ext/autodoc/type_comment.py
+++ b/sphinx/ext/autodoc/type_comment.py
@@ -4,7 +4,7 @@
 
     Update annotations info of living objects using type_comments.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autodoc/typehints.py b/sphinx/ext/autodoc/typehints.py
index e6451b52c9f..533b71e4200 100644
--- a/sphinx/ext/autodoc/typehints.py
+++ b/sphinx/ext/autodoc/typehints.py
@@ -4,7 +4,7 @@
 
     Generating content for autodoc using typehints
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autosectionlabel.py b/sphinx/ext/autosectionlabel.py
index 73a4601174c..be8ad0bc1ee 100644
--- a/sphinx/ext/autosectionlabel.py
+++ b/sphinx/ext/autosectionlabel.py
@@ -4,7 +4,7 @@
 
     Allow reference sections by :ref: role using its title.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autosummary/__init__.py b/sphinx/ext/autosummary/__init__.py
index ffe2e2dc142..b268127d049 100644
--- a/sphinx/ext/autosummary/__init__.py
+++ b/sphinx/ext/autosummary/__init__.py
@@ -48,7 +48,7 @@
     resolved to a Python object, and otherwise it becomes simple emphasis.
     This can be used as the default role to make links 'smart'.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/autosummary/generate.py b/sphinx/ext/autosummary/generate.py
index 10f8ca913f3..c1e5c225bff 100644
--- a/sphinx/ext/autosummary/generate.py
+++ b/sphinx/ext/autosummary/generate.py
@@ -13,7 +13,7 @@
        generate:
                sphinx-autogen -o source/generated source/*.rst
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/coverage.py b/sphinx/ext/coverage.py
index b971b5f25ae..f052b8810a9 100644
--- a/sphinx/ext/coverage.py
+++ b/sphinx/ext/coverage.py
@@ -5,7 +5,7 @@
     Check Python modules and C API for coverage.  Mostly written by Josip
     Dzolonga for the Google Highly Open Participation contest.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/doctest.py b/sphinx/ext/doctest.py
index aeeb7f5ec67..20afa2ec680 100644
--- a/sphinx/ext/doctest.py
+++ b/sphinx/ext/doctest.py
@@ -5,7 +5,7 @@
     Mimic doctest by automatically executing code snippets and checking
     their results.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/duration.py b/sphinx/ext/duration.py
index 7073f7769a8..f714dedfb2f 100644
--- a/sphinx/ext/duration.py
+++ b/sphinx/ext/duration.py
@@ -4,7 +4,7 @@
 
     Measure durations of Sphinx processing.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/extlinks.py b/sphinx/ext/extlinks.py
index ff3adb35744..d82c0378b2e 100644
--- a/sphinx/ext/extlinks.py
+++ b/sphinx/ext/extlinks.py
@@ -19,7 +19,7 @@
 
     You can also give an explicit caption, e.g. :exmpl:`Foo <foo>`.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/githubpages.py b/sphinx/ext/githubpages.py
index 4564ce60e26..e760bb4b6e1 100644
--- a/sphinx/ext/githubpages.py
+++ b/sphinx/ext/githubpages.py
@@ -4,7 +4,7 @@
 
     To publish HTML docs at GitHub Pages, create .nojekyll file.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/graphviz.py b/sphinx/ext/graphviz.py
index dc1cbb68656..402b7c99091 100644
--- a/sphinx/ext/graphviz.py
+++ b/sphinx/ext/graphviz.py
@@ -5,7 +5,7 @@
     Allow graphviz-formatted graphs to be included in Sphinx-generated
     documents inline.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/ifconfig.py b/sphinx/ext/ifconfig.py
index bae4554cf8a..df85450288f 100644
--- a/sphinx/ext/ifconfig.py
+++ b/sphinx/ext/ifconfig.py
@@ -15,7 +15,7 @@
     namespace of the project configuration (that is, all variables from
     ``conf.py`` are available.)
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/imgconverter.py b/sphinx/ext/imgconverter.py
index a82b35a5e96..b0d40b551ec 100644
--- a/sphinx/ext/imgconverter.py
+++ b/sphinx/ext/imgconverter.py
@@ -4,7 +4,7 @@
 
     Image converter extension for Sphinx
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/imgmath.py b/sphinx/ext/imgmath.py
index ed5f8a030bf..cef50d548f8 100644
--- a/sphinx/ext/imgmath.py
+++ b/sphinx/ext/imgmath.py
@@ -4,7 +4,7 @@
 
     Render math in HTML via dvipng or dvisvgm.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/inheritance_diagram.py b/sphinx/ext/inheritance_diagram.py
index 9e38041dff5..63a171087e9 100644
--- a/sphinx/ext/inheritance_diagram.py
+++ b/sphinx/ext/inheritance_diagram.py
@@ -31,7 +31,7 @@ class E(B): pass
     The graph is inserted as a PNG+image map into HTML and a PDF in
     LaTeX.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/intersphinx.py b/sphinx/ext/intersphinx.py
index 52ba11782d9..5569ad9deda 100644
--- a/sphinx/ext/intersphinx.py
+++ b/sphinx/ext/intersphinx.py
@@ -19,7 +19,7 @@
       also be specified individually, e.g. if the docs should be buildable
       without Internet access.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/jsmath.py b/sphinx/ext/jsmath.py
index 1d4eb4826f6..cec40e224a3 100644
--- a/sphinx/ext/jsmath.py
+++ b/sphinx/ext/jsmath.py
@@ -5,7 +5,7 @@
     Set up everything for use of JSMath to display math in HTML
     via JavaScript.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/linkcode.py b/sphinx/ext/linkcode.py
index 68e8603f79b..5c118a9fbbf 100644
--- a/sphinx/ext/linkcode.py
+++ b/sphinx/ext/linkcode.py
@@ -4,7 +4,7 @@
 
     Add external links to module code in Python object descriptions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/mathjax.py b/sphinx/ext/mathjax.py
index 6317a13150a..e4318f35dea 100644
--- a/sphinx/ext/mathjax.py
+++ b/sphinx/ext/mathjax.py
@@ -6,7 +6,7 @@
     Sphinx's HTML writer -- requires the MathJax JavaScript library on your
     webserver/computer.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/napoleon/__init__.py b/sphinx/ext/napoleon/__init__.py
index f62ba40c0d7..5b2715bac09 100644
--- a/sphinx/ext/napoleon/__init__.py
+++ b/sphinx/ext/napoleon/__init__.py
@@ -4,7 +4,7 @@
 
     Support for NumPy and Google style docstrings.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/napoleon/docstring.py b/sphinx/ext/napoleon/docstring.py
index e193063f231..141be022ef4 100644
--- a/sphinx/ext/napoleon/docstring.py
+++ b/sphinx/ext/napoleon/docstring.py
@@ -6,7 +6,7 @@
     Classes for docstring parsing and formatting.
 
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/napoleon/iterators.py b/sphinx/ext/napoleon/iterators.py
index fc41afdb381..e0f5cca9c30 100644
--- a/sphinx/ext/napoleon/iterators.py
+++ b/sphinx/ext/napoleon/iterators.py
@@ -6,7 +6,7 @@
     A collection of helpful iterators.
 
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/todo.py b/sphinx/ext/todo.py
index 273cf3f73e1..640c93935c8 100644
--- a/sphinx/ext/todo.py
+++ b/sphinx/ext/todo.py
@@ -7,7 +7,7 @@
     all todos of your project and lists them along with a backlink to the
     original location.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/ext/viewcode.py b/sphinx/ext/viewcode.py
index 812b3d6a2a3..3459e45caf8 100644
--- a/sphinx/ext/viewcode.py
+++ b/sphinx/ext/viewcode.py
@@ -4,7 +4,7 @@
 
     Add links to module code in Python object descriptions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/extension.py b/sphinx/extension.py
index fa7a0d490cc..8129d89af00 100644
--- a/sphinx/extension.py
+++ b/sphinx/extension.py
@@ -4,7 +4,7 @@
 
     Utilities for Sphinx extensions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/highlighting.py b/sphinx/highlighting.py
index a341212cf86..8425009f78e 100644
--- a/sphinx/highlighting.py
+++ b/sphinx/highlighting.py
@@ -4,7 +4,7 @@
 
     Highlight code blocks using Pygments.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/io.py b/sphinx/io.py
index e4c2e00b065..3508dd58d19 100644
--- a/sphinx/io.py
+++ b/sphinx/io.py
@@ -4,7 +4,7 @@
 
     Input/Output files
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import codecs
diff --git a/sphinx/jinja2glue.py b/sphinx/jinja2glue.py
index 0a26fc9824c..c890455f344 100644
--- a/sphinx/jinja2glue.py
+++ b/sphinx/jinja2glue.py
@@ -4,7 +4,7 @@
 
     Glue code for the jinja2 templating engine.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/locale/__init__.py b/sphinx/locale/__init__.py
index 5210dc7252e..bedd9e1cba7 100644
--- a/sphinx/locale/__init__.py
+++ b/sphinx/locale/__init__.py
@@ -4,7 +4,7 @@
 
     Locale utilities.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/parsers.py b/sphinx/parsers.py
index 19f726b0dda..17c291af77c 100644
--- a/sphinx/parsers.py
+++ b/sphinx/parsers.py
@@ -4,7 +4,7 @@
 
     A Base class for additional parsers.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/project.py b/sphinx/project.py
index e5f05c9d3af..e5df4013ffd 100644
--- a/sphinx/project.py
+++ b/sphinx/project.py
@@ -4,7 +4,7 @@
 
     Utility function and classes for Sphinx projects.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/pycode/__init__.py b/sphinx/pycode/__init__.py
index b72683f98ba..ab0dfdbf83a 100644
--- a/sphinx/pycode/__init__.py
+++ b/sphinx/pycode/__init__.py
@@ -4,7 +4,7 @@
 
     Utilities parsing and analyzing Python code.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/pycode/ast.py b/sphinx/pycode/ast.py
index e8b0832eaca..d131ff4c187 100644
--- a/sphinx/pycode/ast.py
+++ b/sphinx/pycode/ast.py
@@ -4,7 +4,7 @@
 
     Helpers for AST (Abstract Syntax Tree).
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/pycode/parser.py b/sphinx/pycode/parser.py
index d2401211183..dca59acd4f0 100644
--- a/sphinx/pycode/parser.py
+++ b/sphinx/pycode/parser.py
@@ -4,7 +4,7 @@
 
     Utilities parsing and analyzing Python code.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import inspect
diff --git a/sphinx/pygments_styles.py b/sphinx/pygments_styles.py
index 248ae536ea1..1046826afa7 100644
--- a/sphinx/pygments_styles.py
+++ b/sphinx/pygments_styles.py
@@ -4,7 +4,7 @@
 
     Sphinx theme specific highlighting styles.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/registry.py b/sphinx/registry.py
index 0e3b954364a..8a988cb9852 100644
--- a/sphinx/registry.py
+++ b/sphinx/registry.py
@@ -4,7 +4,7 @@
 
     Sphinx component registry.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/roles.py b/sphinx/roles.py
index 2d3042f8f63..4f9261360d3 100644
--- a/sphinx/roles.py
+++ b/sphinx/roles.py
@@ -4,7 +4,7 @@
 
     Handlers for additional ReST roles.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/__init__.py b/sphinx/search/__init__.py
index 2b7f160997f..6c748aed19f 100644
--- a/sphinx/search/__init__.py
+++ b/sphinx/search/__init__.py
@@ -4,7 +4,7 @@
 
     Create a full-text search index for offline search.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import html
diff --git a/sphinx/search/da.py b/sphinx/search/da.py
index 57af4a7bebd..e164e02713d 100644
--- a/sphinx/search/da.py
+++ b/sphinx/search/da.py
@@ -4,7 +4,7 @@
 
     Danish search language: includes the JS Danish stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/de.py b/sphinx/search/de.py
index 6c84d463aad..174eb8d2f49 100644
--- a/sphinx/search/de.py
+++ b/sphinx/search/de.py
@@ -4,7 +4,7 @@
 
     German search language: includes the JS German stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/en.py b/sphinx/search/en.py
index 23a6f973946..b33769cecc4 100644
--- a/sphinx/search/en.py
+++ b/sphinx/search/en.py
@@ -4,7 +4,7 @@
 
     English search language: includes the JS porter stemmer.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/es.py b/sphinx/search/es.py
index 1e8a21085ed..e87584cfc84 100644
--- a/sphinx/search/es.py
+++ b/sphinx/search/es.py
@@ -4,7 +4,7 @@
 
     Spanish search language: includes the JS Spanish stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/fi.py b/sphinx/search/fi.py
index e98ef980560..ceb38cb5ada 100644
--- a/sphinx/search/fi.py
+++ b/sphinx/search/fi.py
@@ -4,7 +4,7 @@
 
     Finnish search language: includes the JS Finnish stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/fr.py b/sphinx/search/fr.py
index 7cc35e2c809..46320a8638d 100644
--- a/sphinx/search/fr.py
+++ b/sphinx/search/fr.py
@@ -4,7 +4,7 @@
 
     French search language: includes the JS French stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/hu.py b/sphinx/search/hu.py
index 01ade35b7b1..628dde63e45 100644
--- a/sphinx/search/hu.py
+++ b/sphinx/search/hu.py
@@ -4,7 +4,7 @@
 
     Hungarian search language: includes the JS Hungarian stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/it.py b/sphinx/search/it.py
index fa81260fba3..2ecf4c2c598 100644
--- a/sphinx/search/it.py
+++ b/sphinx/search/it.py
@@ -4,7 +4,7 @@
 
     Italian search language: includes the JS Italian stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/ja.py b/sphinx/search/ja.py
index b248eb281e7..6f10a4239cc 100644
--- a/sphinx/search/ja.py
+++ b/sphinx/search/ja.py
@@ -4,7 +4,7 @@
 
     Japanese search language: includes routine to split words.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/jssplitter.py b/sphinx/search/jssplitter.py
index 94557956023..9b879772ace 100644
--- a/sphinx/search/jssplitter.py
+++ b/sphinx/search/jssplitter.py
@@ -6,7 +6,7 @@
 
     DO NOT EDIT. This is generated by utils/jssplitter_generator.py
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/nl.py b/sphinx/search/nl.py
index f30ee690a79..f98cdf8ad80 100644
--- a/sphinx/search/nl.py
+++ b/sphinx/search/nl.py
@@ -4,7 +4,7 @@
 
     Dutch search language: includes the JS porter stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/no.py b/sphinx/search/no.py
index 324264bde2f..c78bb698162 100644
--- a/sphinx/search/no.py
+++ b/sphinx/search/no.py
@@ -4,7 +4,7 @@
 
     Norwegian search language: includes the JS Norwegian stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/pt.py b/sphinx/search/pt.py
index 7783f65c0af..a7d99cde38e 100644
--- a/sphinx/search/pt.py
+++ b/sphinx/search/pt.py
@@ -4,7 +4,7 @@
 
     Portuguese search language: includes the JS Portuguese stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/ro.py b/sphinx/search/ro.py
index ddb008b6452..6400967c66a 100644
--- a/sphinx/search/ro.py
+++ b/sphinx/search/ro.py
@@ -4,7 +4,7 @@
 
     Romanian search language: includes the JS Romanian stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/ru.py b/sphinx/search/ru.py
index cf979c0b40e..20ce14869f9 100644
--- a/sphinx/search/ru.py
+++ b/sphinx/search/ru.py
@@ -4,7 +4,7 @@
 
     Russian search language: includes the JS Russian stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/sv.py b/sphinx/search/sv.py
index 0e7e2f37dd2..2ce4027ca81 100644
--- a/sphinx/search/sv.py
+++ b/sphinx/search/sv.py
@@ -4,7 +4,7 @@
 
     Swedish search language: includes the JS Swedish stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/tr.py b/sphinx/search/tr.py
index 7788b115235..565e341fda4 100644
--- a/sphinx/search/tr.py
+++ b/sphinx/search/tr.py
@@ -4,7 +4,7 @@
 
     Turkish search language: includes the JS Turkish stemmer.
 
-    :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/search/zh.py b/sphinx/search/zh.py
index 48f169aea26..6948a6ad45f 100644
--- a/sphinx/search/zh.py
+++ b/sphinx/search/zh.py
@@ -4,7 +4,7 @@
 
     Chinese search language: includes routine to split words.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/setup_command.py b/sphinx/setup_command.py
index 0c32db5dd4a..0a30ff82fe9 100644
--- a/sphinx/setup_command.py
+++ b/sphinx/setup_command.py
@@ -7,7 +7,7 @@
 
     :author: Sebastian Wiesner
     :contact: basti.wiesner@gmx.net
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/templates/graphviz/graphviz.css b/sphinx/templates/graphviz/graphviz.css
index 8ab69e01488..b340734c742 100644
--- a/sphinx/templates/graphviz/graphviz.css
+++ b/sphinx/templates/graphviz/graphviz.css
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- graphviz extension.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/testing/__init__.py b/sphinx/testing/__init__.py
index dd9f32462f3..67263eff99f 100644
--- a/sphinx/testing/__init__.py
+++ b/sphinx/testing/__init__.py
@@ -9,6 +9,6 @@
 
        pytest_plugins = 'sphinx.testing.fixtures'
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
diff --git a/sphinx/testing/comparer.py b/sphinx/testing/comparer.py
index ddd818394a7..642cc844413 100644
--- a/sphinx/testing/comparer.py
+++ b/sphinx/testing/comparer.py
@@ -4,7 +4,7 @@
 
     Sphinx test comparer for pytest
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import difflib
diff --git a/sphinx/testing/fixtures.py b/sphinx/testing/fixtures.py
index b9ee30d8ac4..1cf66283f04 100644
--- a/sphinx/testing/fixtures.py
+++ b/sphinx/testing/fixtures.py
@@ -4,7 +4,7 @@
 
     Sphinx test fixtures for pytest
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/testing/path.py b/sphinx/testing/path.py
index a37839d607e..efc5e8f639b 100644
--- a/sphinx/testing/path.py
+++ b/sphinx/testing/path.py
@@ -2,7 +2,7 @@
     sphinx.testing.path
     ~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/testing/restructuredtext.py b/sphinx/testing/restructuredtext.py
index b25d7f98a71..bb095b4100a 100644
--- a/sphinx/testing/restructuredtext.py
+++ b/sphinx/testing/restructuredtext.py
@@ -2,7 +2,7 @@
     sphinx.testing.restructuredtext
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/testing/util.py b/sphinx/testing/util.py
index 208974115c6..7d0cde143a6 100644
--- a/sphinx/testing/util.py
+++ b/sphinx/testing/util.py
@@ -4,7 +4,7 @@
 
     Sphinx test suite utilities
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import functools
diff --git a/sphinx/themes/agogo/layout.html b/sphinx/themes/agogo/layout.html
index 26c37b10ea5..1d9df693be0 100644
--- a/sphinx/themes/agogo/layout.html
+++ b/sphinx/themes/agogo/layout.html
@@ -5,7 +5,7 @@
     Sphinx layout template for the agogo theme, originally written
     by Andi Albrecht.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "basic/layout.html" %}
diff --git a/sphinx/themes/agogo/static/agogo.css_t b/sphinx/themes/agogo/static/agogo.css_t
index ff43186da03..489ec17eaf8 100644
--- a/sphinx/themes/agogo/static/agogo.css_t
+++ b/sphinx/themes/agogo/static/agogo.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- agogo theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/basic/defindex.html b/sphinx/themes/basic/defindex.html
index 2f8477c315b..8ca5748ac85 100644
--- a/sphinx/themes/basic/defindex.html
+++ b/sphinx/themes/basic/defindex.html
@@ -4,7 +4,7 @@
 
     Default template for the "index" page.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}{{ warn('Now base template defindex.html is deprecated.') }}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/basic/domainindex.html b/sphinx/themes/basic/domainindex.html
index f4f74233873..1ccab0286dd 100644
--- a/sphinx/themes/basic/domainindex.html
+++ b/sphinx/themes/basic/domainindex.html
@@ -4,7 +4,7 @@
 
     Template for domain indices (module index, ...).
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/basic/genindex-single.html b/sphinx/themes/basic/genindex-single.html
index b327eb62074..1182fdada34 100644
--- a/sphinx/themes/basic/genindex-single.html
+++ b/sphinx/themes/basic/genindex-single.html
@@ -4,7 +4,7 @@
 
     Template for a "single" page of a split index.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {% macro indexentries(firstname, links) %}
diff --git a/sphinx/themes/basic/genindex-split.html b/sphinx/themes/basic/genindex-split.html
index e9db8574ddc..8b79dc8dcfa 100644
--- a/sphinx/themes/basic/genindex-split.html
+++ b/sphinx/themes/basic/genindex-split.html
@@ -4,7 +4,7 @@
 
     Template for a "split" index overview page.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/basic/genindex.html b/sphinx/themes/basic/genindex.html
index fb769737f48..7f16c3544d6 100644
--- a/sphinx/themes/basic/genindex.html
+++ b/sphinx/themes/basic/genindex.html
@@ -4,7 +4,7 @@
 
     Template for an "all-in-one" index.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/basic/globaltoc.html b/sphinx/themes/basic/globaltoc.html
index 1b2f9baeefd..a47c32cc054 100644
--- a/sphinx/themes/basic/globaltoc.html
+++ b/sphinx/themes/basic/globaltoc.html
@@ -4,7 +4,7 @@
 
     Sphinx sidebar template: global table of contents.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 <h3><a href="{{ pathto(master_doc)|e }}">{{ _('Table of Contents') }}</a></h3>
diff --git a/sphinx/themes/basic/layout.html b/sphinx/themes/basic/layout.html
index a7604ba8dc2..bd56681c006 100644
--- a/sphinx/themes/basic/layout.html
+++ b/sphinx/themes/basic/layout.html
@@ -4,7 +4,7 @@
 
     Master layout template for Sphinx themes.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- block doctype -%}{%- if html5_doctype %}
diff --git a/sphinx/themes/basic/localtoc.html b/sphinx/themes/basic/localtoc.html
index 0e1c5511bd5..c15ad27087d 100644
--- a/sphinx/themes/basic/localtoc.html
+++ b/sphinx/themes/basic/localtoc.html
@@ -4,7 +4,7 @@
 
     Sphinx sidebar template: local table of contents.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- if display_toc %}
diff --git a/sphinx/themes/basic/page.html b/sphinx/themes/basic/page.html
index c9c35116714..5878bdeebf1 100644
--- a/sphinx/themes/basic/page.html
+++ b/sphinx/themes/basic/page.html
@@ -4,7 +4,7 @@
 
     Master template for simple pages.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/basic/relations.html b/sphinx/themes/basic/relations.html
index 5a2113cf0cb..c4391fe4d40 100644
--- a/sphinx/themes/basic/relations.html
+++ b/sphinx/themes/basic/relations.html
@@ -4,7 +4,7 @@
 
     Sphinx sidebar template: relation links.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- if prev %}
diff --git a/sphinx/themes/basic/search.html b/sphinx/themes/basic/search.html
index cf574f8d5f2..453a35fb982 100644
--- a/sphinx/themes/basic/search.html
+++ b/sphinx/themes/basic/search.html
@@ -4,7 +4,7 @@
 
     Template for the search page.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/basic/searchbox.html b/sphinx/themes/basic/searchbox.html
index 6ce2027869a..68f933f6609 100644
--- a/sphinx/themes/basic/searchbox.html
+++ b/sphinx/themes/basic/searchbox.html
@@ -4,7 +4,7 @@
 
     Sphinx sidebar template: quick search box.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- if pagename != "search" and builder != "singlehtml" %}
diff --git a/sphinx/themes/basic/sourcelink.html b/sphinx/themes/basic/sourcelink.html
index 2ff5d1b6663..51261123015 100644
--- a/sphinx/themes/basic/sourcelink.html
+++ b/sphinx/themes/basic/sourcelink.html
@@ -4,7 +4,7 @@
 
     Sphinx sidebar template: "show source" link.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- if show_source and has_source and sourcename %}
diff --git a/sphinx/themes/basic/static/basic.css_t b/sphinx/themes/basic/static/basic.css_t
index 38b9fb5539a..3bb3ea7053e 100644
--- a/sphinx/themes/basic/static/basic.css_t
+++ b/sphinx/themes/basic/static/basic.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- basic theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/basic/static/doctools.js b/sphinx/themes/basic/static/doctools.js
index 7d88f807dc9..144884ea651 100644
--- a/sphinx/themes/basic/static/doctools.js
+++ b/sphinx/themes/basic/static/doctools.js
@@ -4,7 +4,7 @@
  *
  * Sphinx JavaScript utilities for all documentation.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/basic/static/language_data.js_t b/sphinx/themes/basic/static/language_data.js_t
index 531813877e0..1425b022a2b 100644
--- a/sphinx/themes/basic/static/language_data.js_t
+++ b/sphinx/themes/basic/static/language_data.js_t
@@ -5,7 +5,7 @@
  * This script contains the language-specific data used by searchtools.js,
  * namely the list of stopwords, stemmer, scorer and splitter.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/basic/static/searchtools.js b/sphinx/themes/basic/static/searchtools.js
index 261ecaa9282..6fc9e7f3338 100644
--- a/sphinx/themes/basic/static/searchtools.js
+++ b/sphinx/themes/basic/static/searchtools.js
@@ -4,7 +4,7 @@
  *
  * Sphinx JavaScript utilities for the full-text search.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/classic/layout.html b/sphinx/themes/classic/layout.html
index c638c7f9049..dbb30b98ccc 100644
--- a/sphinx/themes/classic/layout.html
+++ b/sphinx/themes/classic/layout.html
@@ -4,7 +4,7 @@
 
     Sphinx layout template for the classic theme.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "basic/layout.html" %}
diff --git a/sphinx/themes/classic/static/classic.css_t b/sphinx/themes/classic/static/classic.css_t
index bdd9db75f91..4a31edf6ab9 100644
--- a/sphinx/themes/classic/static/classic.css_t
+++ b/sphinx/themes/classic/static/classic.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- classic theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/classic/static/sidebar.js_t b/sphinx/themes/classic/static/sidebar.js_t
index 46437dae515..e1d323b2461 100644
--- a/sphinx/themes/classic/static/sidebar.js_t
+++ b/sphinx/themes/classic/static/sidebar.js_t
@@ -16,7 +16,7 @@
  * Once the browser is closed the cookie is deleted and the position
  * reset to the default (expanded).
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/epub/epub-cover.html b/sphinx/themes/epub/epub-cover.html
index 49a7de3a384..70a5a556b2c 100644
--- a/sphinx/themes/epub/epub-cover.html
+++ b/sphinx/themes/epub/epub-cover.html
@@ -4,7 +4,7 @@
 
     Sample template for the html cover page.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "layout.html" %}
diff --git a/sphinx/themes/epub/layout.html b/sphinx/themes/epub/layout.html
index 03f03e26786..4f52fc89179 100644
--- a/sphinx/themes/epub/layout.html
+++ b/sphinx/themes/epub/layout.html
@@ -4,7 +4,7 @@
 
     Sphinx layout template for the epub theme.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "basic/layout.html" %}
diff --git a/sphinx/themes/epub/static/epub.css_t b/sphinx/themes/epub/static/epub.css_t
index 1e81c182c3c..46bbb93b357 100644
--- a/sphinx/themes/epub/static/epub.css_t
+++ b/sphinx/themes/epub/static/epub.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- epub theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/haiku/layout.html b/sphinx/themes/haiku/layout.html
index c47b8eccc1c..2c2469722f5 100644
--- a/sphinx/themes/haiku/layout.html
+++ b/sphinx/themes/haiku/layout.html
@@ -4,7 +4,7 @@
 
     Sphinx layout template for the haiku theme.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "basic/layout.html" %}
diff --git a/sphinx/themes/haiku/static/haiku.css_t b/sphinx/themes/haiku/static/haiku.css_t
index 21caac0fd40..fa9f77b9de3 100644
--- a/sphinx/themes/haiku/static/haiku.css_t
+++ b/sphinx/themes/haiku/static/haiku.css_t
@@ -16,7 +16,7 @@
  *              Braden Ewing <brewin@gmail.com>
  *              Humdinger <humdingerb@gmail.com>
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/nature/static/nature.css_t b/sphinx/themes/nature/static/nature.css_t
index 7df474a9160..3dd748dda55 100644
--- a/sphinx/themes/nature/static/nature.css_t
+++ b/sphinx/themes/nature/static/nature.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- nature theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/nonav/layout.html b/sphinx/themes/nonav/layout.html
index 256b9a228a7..d39800c184a 100644
--- a/sphinx/themes/nonav/layout.html
+++ b/sphinx/themes/nonav/layout.html
@@ -4,7 +4,7 @@
 
     Sphinx layout template for the any help system theme.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "basic/layout.html" %}
diff --git a/sphinx/themes/nonav/static/nonav.css b/sphinx/themes/nonav/static/nonav.css
index d37c7622162..63abb9f0dac 100644
--- a/sphinx/themes/nonav/static/nonav.css
+++ b/sphinx/themes/nonav/static/nonav.css
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- nonav theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/pyramid/static/epub.css b/sphinx/themes/pyramid/static/epub.css
index 270e9570e4b..6e5722fd6fc 100644
--- a/sphinx/themes/pyramid/static/epub.css
+++ b/sphinx/themes/pyramid/static/epub.css
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- default theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/pyramid/static/pyramid.css_t b/sphinx/themes/pyramid/static/pyramid.css_t
index 0bab3d1a2a4..9857f2850fa 100644
--- a/sphinx/themes/pyramid/static/pyramid.css_t
+++ b/sphinx/themes/pyramid/static/pyramid.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- pylons theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/scrolls/layout.html b/sphinx/themes/scrolls/layout.html
index 7866a516205..066d9f6682f 100644
--- a/sphinx/themes/scrolls/layout.html
+++ b/sphinx/themes/scrolls/layout.html
@@ -5,7 +5,7 @@
     Sphinx layout template for the scrolls theme, originally written
     by Armin Ronacher.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 #}
 {%- extends "basic/layout.html" %}
diff --git a/sphinx/themes/scrolls/static/scrolls.css_t b/sphinx/themes/scrolls/static/scrolls.css_t
index e484f8c4f28..f039d9e2b75 100644
--- a/sphinx/themes/scrolls/static/scrolls.css_t
+++ b/sphinx/themes/scrolls/static/scrolls.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- scrolls theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/sphinxdoc/static/sphinxdoc.css_t b/sphinx/themes/sphinxdoc/static/sphinxdoc.css_t
index 8eca6327867..4be04ce7104 100644
--- a/sphinx/themes/sphinxdoc/static/sphinxdoc.css_t
+++ b/sphinx/themes/sphinxdoc/static/sphinxdoc.css_t
@@ -5,7 +5,7 @@
  * Sphinx stylesheet -- sphinxdoc theme.  Originally created by
  * Armin Ronacher for Werkzeug.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/themes/traditional/static/traditional.css_t b/sphinx/themes/traditional/static/traditional.css_t
index 0120f83a5c6..4371d8e89ba 100644
--- a/sphinx/themes/traditional/static/traditional.css_t
+++ b/sphinx/themes/traditional/static/traditional.css_t
@@ -4,7 +4,7 @@
  *
  * Sphinx stylesheet -- traditional docs.python.org theme.
  *
- * :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+ * :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
  * :license: BSD, see LICENSE for details.
  *
  */
diff --git a/sphinx/theming.py b/sphinx/theming.py
index 087ee7f2419..30e4dffdb64 100644
--- a/sphinx/theming.py
+++ b/sphinx/theming.py
@@ -4,7 +4,7 @@
 
     Theming support for HTML builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/__init__.py b/sphinx/transforms/__init__.py
index f854f177209..45640308f78 100644
--- a/sphinx/transforms/__init__.py
+++ b/sphinx/transforms/__init__.py
@@ -4,7 +4,7 @@
 
     Docutils transforms used by Sphinx when reading documents.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/compact_bullet_list.py b/sphinx/transforms/compact_bullet_list.py
index e30efa92b06..18042358e3b 100644
--- a/sphinx/transforms/compact_bullet_list.py
+++ b/sphinx/transforms/compact_bullet_list.py
@@ -4,7 +4,7 @@
 
     Docutils transforms used by Sphinx when reading documents.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/i18n.py b/sphinx/transforms/i18n.py
index bffcb511d8c..8520cfc696c 100644
--- a/sphinx/transforms/i18n.py
+++ b/sphinx/transforms/i18n.py
@@ -4,7 +4,7 @@
 
     Docutils transforms used by Sphinx when reading documents.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/post_transforms/__init__.py b/sphinx/transforms/post_transforms/__init__.py
index f9feab2a618..2c563540a9c 100644
--- a/sphinx/transforms/post_transforms/__init__.py
+++ b/sphinx/transforms/post_transforms/__init__.py
@@ -4,7 +4,7 @@
 
     Docutils transforms used by Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/post_transforms/code.py b/sphinx/transforms/post_transforms/code.py
index d306b5c8011..20df1db3c7a 100644
--- a/sphinx/transforms/post_transforms/code.py
+++ b/sphinx/transforms/post_transforms/code.py
@@ -4,7 +4,7 @@
 
     transforms for code-blocks.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/post_transforms/images.py b/sphinx/transforms/post_transforms/images.py
index a7002343686..fb4c3ca2030 100644
--- a/sphinx/transforms/post_transforms/images.py
+++ b/sphinx/transforms/post_transforms/images.py
@@ -4,7 +4,7 @@
 
     Docutils transforms used by Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/transforms/references.py b/sphinx/transforms/references.py
index b6129b0bcb7..cd564d9eba1 100644
--- a/sphinx/transforms/references.py
+++ b/sphinx/transforms/references.py
@@ -4,7 +4,7 @@
 
     Docutils transforms used by Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/__init__.py b/sphinx/util/__init__.py
index 9349ed0e498..2fbc182e59f 100644
--- a/sphinx/util/__init__.py
+++ b/sphinx/util/__init__.py
@@ -4,7 +4,7 @@
 
     Utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/build_phase.py b/sphinx/util/build_phase.py
index d6193b400d3..07a5ee7cd4e 100644
--- a/sphinx/util/build_phase.py
+++ b/sphinx/util/build_phase.py
@@ -4,7 +4,7 @@
 
     Build phase of Sphinx application.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/cfamily.py b/sphinx/util/cfamily.py
index 17c335b607a..1549fbf75d9 100644
--- a/sphinx/util/cfamily.py
+++ b/sphinx/util/cfamily.py
@@ -4,7 +4,7 @@
 
     Utility functions common to the C and C++ domains.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/compat.py b/sphinx/util/compat.py
index 7c55c4ec7dc..dbe902be773 100644
--- a/sphinx/util/compat.py
+++ b/sphinx/util/compat.py
@@ -4,7 +4,7 @@
 
     modules for backward compatibility
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/console.py b/sphinx/util/console.py
index 579a9513461..3ea5b9573cd 100644
--- a/sphinx/util/console.py
+++ b/sphinx/util/console.py
@@ -4,7 +4,7 @@
 
     Format colored console output.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/docfields.py b/sphinx/util/docfields.py
index 9a57ccff75a..3fc72340ac8 100644
--- a/sphinx/util/docfields.py
+++ b/sphinx/util/docfields.py
@@ -5,7 +5,7 @@
     "Doc fields" are reST field lists in object descriptions that will
     be domain-specifically transformed to a more appealing presentation.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/docstrings.py b/sphinx/util/docstrings.py
index 206986bd05c..ac778af87ae 100644
--- a/sphinx/util/docstrings.py
+++ b/sphinx/util/docstrings.py
@@ -4,7 +4,7 @@
 
     Utilities for docstring processing.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/docutils.py b/sphinx/util/docutils.py
index 7831f267c1d..ce50c7ab142 100644
--- a/sphinx/util/docutils.py
+++ b/sphinx/util/docutils.py
@@ -4,7 +4,7 @@
 
     Utility functions for docutils.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/fileutil.py b/sphinx/util/fileutil.py
index eec1ae46321..466c28135a4 100644
--- a/sphinx/util/fileutil.py
+++ b/sphinx/util/fileutil.py
@@ -4,7 +4,7 @@
 
     File utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/i18n.py b/sphinx/util/i18n.py
index 41407f4e198..e149976ef8b 100644
--- a/sphinx/util/i18n.py
+++ b/sphinx/util/i18n.py
@@ -4,7 +4,7 @@
 
     Builder superclass for all builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import gettext
diff --git a/sphinx/util/images.py b/sphinx/util/images.py
index 0ddf6490864..81a32181893 100644
--- a/sphinx/util/images.py
+++ b/sphinx/util/images.py
@@ -4,7 +4,7 @@
 
     Image utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 767ef319cae..e91e5df96f6 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -4,7 +4,7 @@
 
     Helpers for inspecting Python modules.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/inventory.py b/sphinx/util/inventory.py
index 6d3b5f4551e..b1af1bfb92d 100644
--- a/sphinx/util/inventory.py
+++ b/sphinx/util/inventory.py
@@ -4,7 +4,7 @@
 
     Inventory utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import os
diff --git a/sphinx/util/jsdump.py b/sphinx/util/jsdump.py
index 0cd3c8b8ca7..114fd707516 100644
--- a/sphinx/util/jsdump.py
+++ b/sphinx/util/jsdump.py
@@ -5,7 +5,7 @@
     This module implements a simple JavaScript serializer.
     Uses the basestring encode function from simplejson by Bob Ippolito.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/jsonimpl.py b/sphinx/util/jsonimpl.py
index 4cb3bc93fa9..b038fd4dbdf 100644
--- a/sphinx/util/jsonimpl.py
+++ b/sphinx/util/jsonimpl.py
@@ -4,7 +4,7 @@
 
     JSON serializer implementation wrapper.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/logging.py b/sphinx/util/logging.py
index 0f2a8b6f0f3..09780723a91 100644
--- a/sphinx/util/logging.py
+++ b/sphinx/util/logging.py
@@ -4,7 +4,7 @@
 
     Logging utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/matching.py b/sphinx/util/matching.py
index 2d37866a63a..d33ae03336a 100644
--- a/sphinx/util/matching.py
+++ b/sphinx/util/matching.py
@@ -4,7 +4,7 @@
 
     Pattern-matching utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/math.py b/sphinx/util/math.py
index 2a9bd66d7d3..229e09d36e1 100644
--- a/sphinx/util/math.py
+++ b/sphinx/util/math.py
@@ -4,7 +4,7 @@
 
     Utility functions for math.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/nodes.py b/sphinx/util/nodes.py
index 859760dcfac..d5e43e71602 100644
--- a/sphinx/util/nodes.py
+++ b/sphinx/util/nodes.py
@@ -4,7 +4,7 @@
 
     Docutils node-related utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/osutil.py b/sphinx/util/osutil.py
index abbb0617a6b..53bffd929f1 100644
--- a/sphinx/util/osutil.py
+++ b/sphinx/util/osutil.py
@@ -4,7 +4,7 @@
 
     Operating system-related utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/parallel.py b/sphinx/util/parallel.py
index ddcdaa3164b..ab27a5128dd 100644
--- a/sphinx/util/parallel.py
+++ b/sphinx/util/parallel.py
@@ -4,7 +4,7 @@
 
     Parallel building utilities.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/png.py b/sphinx/util/png.py
index 3dd22d7ffad..2ab5a836f01 100644
--- a/sphinx/util/png.py
+++ b/sphinx/util/png.py
@@ -4,7 +4,7 @@
 
     PNG image manipulation helpers.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/pycompat.py b/sphinx/util/pycompat.py
index 6474cf1418c..87c38f72e3e 100644
--- a/sphinx/util/pycompat.py
+++ b/sphinx/util/pycompat.py
@@ -4,7 +4,7 @@
 
     Stuff for Python version compatibility.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/requests.py b/sphinx/util/requests.py
index ca570249a90..8ae435d41b0 100644
--- a/sphinx/util/requests.py
+++ b/sphinx/util/requests.py
@@ -4,7 +4,7 @@
 
     Simple requests package loader
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/rst.py b/sphinx/util/rst.py
index b67b68c4a99..79ede34326f 100644
--- a/sphinx/util/rst.py
+++ b/sphinx/util/rst.py
@@ -4,7 +4,7 @@
 
     reST helper functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/stemmer/__init__.py b/sphinx/util/stemmer/__init__.py
index 94aaa136db8..6470dfe2b81 100644
--- a/sphinx/util/stemmer/__init__.py
+++ b/sphinx/util/stemmer/__init__.py
@@ -4,7 +4,7 @@
 
     Word stemming utilities for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/tags.py b/sphinx/util/tags.py
index 1662a06f008..c502312202b 100644
--- a/sphinx/util/tags.py
+++ b/sphinx/util/tags.py
@@ -2,7 +2,7 @@
     sphinx.util.tags
     ~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/template.py b/sphinx/util/template.py
index 8785928a948..a61008602ff 100644
--- a/sphinx/util/template.py
+++ b/sphinx/util/template.py
@@ -4,7 +4,7 @@
 
     Templates utility functions for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/texescape.py b/sphinx/util/texescape.py
index 98e763aaf01..b67dcfe826b 100644
--- a/sphinx/util/texescape.py
+++ b/sphinx/util/texescape.py
@@ -4,7 +4,7 @@
 
     TeX escaping helper.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/util/typing.py b/sphinx/util/typing.py
index 2d4f67bba26..80f1acc4864 100644
--- a/sphinx/util/typing.py
+++ b/sphinx/util/typing.py
@@ -4,7 +4,7 @@
 
     The composit types for Sphinx.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/versioning.py b/sphinx/versioning.py
index 7307b13d18b..6e5a9eb2662 100644
--- a/sphinx/versioning.py
+++ b/sphinx/versioning.py
@@ -5,7 +5,7 @@
     Implements the low-level algorithms Sphinx uses for the versioning of
     doctrees.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import pickle
diff --git a/sphinx/writers/__init__.py b/sphinx/writers/__init__.py
index 97543df0dc6..34a5d36f3c6 100644
--- a/sphinx/writers/__init__.py
+++ b/sphinx/writers/__init__.py
@@ -4,6 +4,6 @@
 
     Custom docutils writers.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
diff --git a/sphinx/writers/html.py b/sphinx/writers/html.py
index d3c87076f7e..cf7ec2f036f 100644
--- a/sphinx/writers/html.py
+++ b/sphinx/writers/html.py
@@ -4,7 +4,7 @@
 
     docutils writers handling Sphinx' custom nodes.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/writers/html5.py b/sphinx/writers/html5.py
index 7824f54f5d1..fafa125f870 100644
--- a/sphinx/writers/html5.py
+++ b/sphinx/writers/html5.py
@@ -4,7 +4,7 @@
 
     Experimental docutils writers for HTML5 handling Sphinx' custom nodes.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/writers/latex.py b/sphinx/writers/latex.py
index 413ee38b3c1..d5a28d87c52 100644
--- a/sphinx/writers/latex.py
+++ b/sphinx/writers/latex.py
@@ -7,7 +7,7 @@
     Much of this code is adapted from Dave Kuhlman's "docpy" writer from his
     docutils sandbox.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/writers/manpage.py b/sphinx/writers/manpage.py
index c8593c6e84f..63a2060ca51 100644
--- a/sphinx/writers/manpage.py
+++ b/sphinx/writers/manpage.py
@@ -4,7 +4,7 @@
 
     Manual page writer, extended for Sphinx custom nodes.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/writers/texinfo.py b/sphinx/writers/texinfo.py
index 5e7f98de7b8..5cdd0d6f411 100644
--- a/sphinx/writers/texinfo.py
+++ b/sphinx/writers/texinfo.py
@@ -4,7 +4,7 @@
 
     Custom docutils writer for Texinfo.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/sphinx/writers/text.py b/sphinx/writers/text.py
index c110f80e8d0..c0ebe32a227 100644
--- a/sphinx/writers/text.py
+++ b/sphinx/writers/text.py
@@ -4,7 +4,7 @@
 
     Custom docutils writer for plain text.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import math
diff --git a/sphinx/writers/xml.py b/sphinx/writers/xml.py
index d007898ba7d..19fa3c1efa0 100644
--- a/sphinx/writers/xml.py
+++ b/sphinx/writers/xml.py
@@ -4,7 +4,7 @@
 
     Docutils-native XML and pseudo-XML writers.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/conftest.py b/tests/conftest.py
index bacd13013a6..5580f672b55 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -2,7 +2,7 @@
     pytest config for sphinx/tests
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/roots/test-changes/conf.py b/tests/roots/test-changes/conf.py
index 9d6d39631ed..ec67b9c5979 100644
--- a/tests/roots/test-changes/conf.py
+++ b/tests/roots/test-changes/conf.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
 project = 'Sphinx ChangesBuilder tests'
-copyright = '2007-2020 by the Sphinx team, see AUTHORS'
+copyright = '2007-2021 by the Sphinx team, see AUTHORS'
 version = '0.6'
 release = '0.6alpha1'
diff --git a/tests/test_api_translator.py b/tests/test_api_translator.py
index 47895a67559..fddcd9d65a9 100644
--- a/tests/test_api_translator.py
+++ b/tests/test_api_translator.py
@@ -4,7 +4,7 @@
 
     Test the Sphinx API for translator.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_application.py b/tests/test_application.py
index a089a4bc020..94ddd04cf35 100644
--- a/tests/test_application.py
+++ b/tests/test_application.py
@@ -4,7 +4,7 @@
 
     Test the Sphinx class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build.py b/tests/test_build.py
index 756a56e6d0d..62de3ea5f59 100644
--- a/tests/test_build.py
+++ b/tests/test_build.py
@@ -4,7 +4,7 @@
 
     Test all builders.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_changes.py b/tests/test_build_changes.py
index d0a49de8cf1..c6cbd497df8 100644
--- a/tests/test_build_changes.py
+++ b/tests/test_build_changes.py
@@ -4,7 +4,7 @@
 
     Test the ChangesBuilder class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_dirhtml.py b/tests/test_build_dirhtml.py
index e89e6888dc1..086b8426b42 100644
--- a/tests/test_build_dirhtml.py
+++ b/tests/test_build_dirhtml.py
@@ -4,7 +4,7 @@
 
     Test dirhtml builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_epub.py b/tests/test_build_epub.py
index 47041491509..982f4c1b94b 100644
--- a/tests/test_build_epub.py
+++ b/tests/test_build_epub.py
@@ -4,7 +4,7 @@
 
     Test the HTML builder and check output against XPath.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_gettext.py b/tests/test_build_gettext.py
index 08fda96446f..92ec384b562 100644
--- a/tests/test_build_gettext.py
+++ b/tests/test_build_gettext.py
@@ -4,7 +4,7 @@
 
     Test the build process with gettext builder with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_html.py b/tests/test_build_html.py
index 42de6f3561d..9eddee6d663 100644
--- a/tests/test_build_html.py
+++ b/tests/test_build_html.py
@@ -4,7 +4,7 @@
 
     Test the HTML builder and check output against XPath.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_latex.py b/tests/test_build_latex.py
index 69ffa36e054..6f6041aea84 100644
--- a/tests/test_build_latex.py
+++ b/tests/test_build_latex.py
@@ -4,7 +4,7 @@
 
     Test the build process with LaTeX builder with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_linkcheck.py b/tests/test_build_linkcheck.py
index cfb3a032c1b..8427dfb599f 100644
--- a/tests/test_build_linkcheck.py
+++ b/tests/test_build_linkcheck.py
@@ -4,7 +4,7 @@
 
     Test the build process with manpage builder with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_manpage.py b/tests/test_build_manpage.py
index d4b1a320e84..a017abc69b7 100644
--- a/tests/test_build_manpage.py
+++ b/tests/test_build_manpage.py
@@ -4,7 +4,7 @@
 
     Test the build process with manpage builder with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_texinfo.py b/tests/test_build_texinfo.py
index a18c8c6bf2d..546ccaabf4b 100644
--- a/tests/test_build_texinfo.py
+++ b/tests/test_build_texinfo.py
@@ -4,7 +4,7 @@
 
     Test the build process with Texinfo builder with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_build_text.py b/tests/test_build_text.py
index 0ada5bb703d..e3d8ff11189 100644
--- a/tests/test_build_text.py
+++ b/tests/test_build_text.py
@@ -4,7 +4,7 @@
 
     Test the build process with Text builder with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_builder.py b/tests/test_builder.py
index 4a37db84dab..ed3f8cdaabc 100644
--- a/tests/test_builder.py
+++ b/tests/test_builder.py
@@ -4,7 +4,7 @@
 
     Test the Builder class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import pytest
diff --git a/tests/test_catalogs.py b/tests/test_catalogs.py
index e603a5812df..986979fe269 100644
--- a/tests/test_catalogs.py
+++ b/tests/test_catalogs.py
@@ -4,7 +4,7 @@
 
     Test the base build process.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import shutil
diff --git a/tests/test_config.py b/tests/test_config.py
index 64face9fc56..9a0b617d5d9 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -5,7 +5,7 @@
     Test the sphinx.config.Config class and its handling in the
     Application class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_correct_year.py b/tests/test_correct_year.py
index 7dc3ea89db3..6afcce2b590 100644
--- a/tests/test_correct_year.py
+++ b/tests/test_correct_year.py
@@ -4,7 +4,7 @@
 
     Test copyright year adjustment
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import pytest
diff --git a/tests/test_directive_code.py b/tests/test_directive_code.py
index eda33164540..9eecabe10e1 100644
--- a/tests/test_directive_code.py
+++ b/tests/test_directive_code.py
@@ -4,7 +4,7 @@
 
     Test the code-block directive.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_directive_only.py b/tests/test_directive_only.py
index 3de22c71f08..72cbc6bd72c 100644
--- a/tests/test_directive_only.py
+++ b/tests/test_directive_only.py
@@ -4,7 +4,7 @@
 
     Test the only directive with the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_directive_other.py b/tests/test_directive_other.py
index 52e4a937c31..09877208c62 100644
--- a/tests/test_directive_other.py
+++ b/tests/test_directive_other.py
@@ -4,7 +4,7 @@
 
     Test the other directives.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_directive_patch.py b/tests/test_directive_patch.py
index 8572ff67245..7dc568b1d5e 100644
--- a/tests/test_directive_patch.py
+++ b/tests/test_directive_patch.py
@@ -4,7 +4,7 @@
 
     Test the patched directives.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_docutilsconf.py b/tests/test_docutilsconf.py
index 02a7fc62bae..9f12fd00430 100644
--- a/tests/test_docutilsconf.py
+++ b/tests/test_docutilsconf.py
@@ -4,7 +4,7 @@
 
     Test docutils.conf support for several writers.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_domain_c.py b/tests/test_domain_c.py
index 28e74e7bfc8..10d618712d0 100644
--- a/tests/test_domain_c.py
+++ b/tests/test_domain_c.py
@@ -4,7 +4,7 @@
 
     Tests the C Domain
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 from xml.etree import ElementTree
diff --git a/tests/test_domain_cpp.py b/tests/test_domain_cpp.py
index ff2a015ee88..b867ffb6824 100644
--- a/tests/test_domain_cpp.py
+++ b/tests/test_domain_cpp.py
@@ -4,7 +4,7 @@
 
     Tests the C++ Domain
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_domain_js.py b/tests/test_domain_js.py
index 58c54c7666a..1fb865d4b8c 100644
--- a/tests/test_domain_js.py
+++ b/tests/test_domain_js.py
@@ -4,7 +4,7 @@
 
     Tests the JavaScript Domain
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_domain_py.py b/tests/test_domain_py.py
index f95521e2e91..d8eac6284a0 100644
--- a/tests/test_domain_py.py
+++ b/tests/test_domain_py.py
@@ -4,7 +4,7 @@
 
     Tests the Python Domain
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_domain_rst.py b/tests/test_domain_rst.py
index 93401e6c938..ed542ed35ad 100644
--- a/tests/test_domain_rst.py
+++ b/tests/test_domain_rst.py
@@ -4,7 +4,7 @@
 
     Tests the reStructuredText domain.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_domain_std.py b/tests/test_domain_std.py
index 1b3682ee69d..1431b8bd45c 100644
--- a/tests/test_domain_std.py
+++ b/tests/test_domain_std.py
@@ -4,7 +4,7 @@
 
     Tests the std domain
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_environment.py b/tests/test_environment.py
index 0cc1247c038..ccf396d9cc9 100644
--- a/tests/test_environment.py
+++ b/tests/test_environment.py
@@ -4,7 +4,7 @@
 
     Test the BuildEnvironment class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import os
diff --git a/tests/test_environment_indexentries.py b/tests/test_environment_indexentries.py
index 075022be5c1..7ecc7ba534a 100644
--- a/tests/test_environment_indexentries.py
+++ b/tests/test_environment_indexentries.py
@@ -4,7 +4,7 @@
 
     Test the sphinx.environment.managers.indexentries.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_environment_toctree.py b/tests/test_environment_toctree.py
index db79c358f4b..41b3f727caa 100644
--- a/tests/test_environment_toctree.py
+++ b/tests/test_environment_toctree.py
@@ -4,7 +4,7 @@
 
     Test the sphinx.environment.managers.toctree.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_events.py b/tests/test_events.py
index 4fbe03a179f..bfff7a30f55 100644
--- a/tests/test_events.py
+++ b/tests/test_events.py
@@ -4,7 +4,7 @@
 
     Test the EventManager class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_apidoc.py b/tests/test_ext_apidoc.py
index e19a1d7ba66..980c6dcac57 100644
--- a/tests/test_ext_apidoc.py
+++ b/tests/test_ext_apidoc.py
@@ -4,7 +4,7 @@
 
     Test the sphinx.apidoc module.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc.py b/tests/test_ext_autodoc.py
index 1fa0c1d7dfa..30efca9f137 100644
--- a/tests/test_ext_autodoc.py
+++ b/tests/test_ext_autodoc.py
@@ -5,7 +5,7 @@
     Test the autodoc extension.  This tests mainly the Documenters; the auto
     directives are tested in a test source file translated by test_build.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_autoattribute.py b/tests/test_ext_autodoc_autoattribute.py
index 7f79ca332bb..f3fffe75b6e 100644
--- a/tests/test_ext_autodoc_autoattribute.py
+++ b/tests/test_ext_autodoc_autoattribute.py
@@ -5,7 +5,7 @@
     Test the autodoc extension.  This tests mainly the Documenters; the auto
     directives are tested in a test source file translated by test_build.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_autoclass.py b/tests/test_ext_autodoc_autoclass.py
index 6130f233a47..0882f4b3d04 100644
--- a/tests/test_ext_autodoc_autoclass.py
+++ b/tests/test_ext_autodoc_autoclass.py
@@ -5,7 +5,7 @@
     Test the autodoc extension.  This tests mainly the Documenters; the auto
     directives are tested in a test source file translated by test_build.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_autodata.py b/tests/test_ext_autodoc_autodata.py
index d3f63f4326c..2f9962d0b1f 100644
--- a/tests/test_ext_autodoc_autodata.py
+++ b/tests/test_ext_autodoc_autodata.py
@@ -5,7 +5,7 @@
     Test the autodoc extension.  This tests mainly the Documenters; the auto
     directives are tested in a test source file translated by test_build.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_autofunction.py b/tests/test_ext_autodoc_autofunction.py
index 4010e7cee9f..aa047668720 100644
--- a/tests/test_ext_autodoc_autofunction.py
+++ b/tests/test_ext_autodoc_autofunction.py
@@ -5,7 +5,7 @@
     Test the autodoc extension.  This tests mainly the Documenters; the auto
     directives are tested in a test source file translated by test_build.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_automodule.py b/tests/test_ext_autodoc_automodule.py
index 2fd20a611ea..d53c68144dc 100644
--- a/tests/test_ext_autodoc_automodule.py
+++ b/tests/test_ext_autodoc_automodule.py
@@ -5,7 +5,7 @@
     Test the autodoc extension.  This tests mainly the Documenters; the auto
     directives are tested in a test source file translated by test_build.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_configs.py b/tests/test_ext_autodoc_configs.py
index 979c66d4732..9cd5f5e32ed 100644
--- a/tests/test_ext_autodoc_configs.py
+++ b/tests/test_ext_autodoc_configs.py
@@ -4,7 +4,7 @@
 
     Test the autodoc extension.  This tests mainly for config variables
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_events.py b/tests/test_ext_autodoc_events.py
index d00dea180db..561ac49deef 100644
--- a/tests/test_ext_autodoc_events.py
+++ b/tests/test_ext_autodoc_events.py
@@ -4,7 +4,7 @@
 
     Test the autodoc extension.  This tests mainly for autodoc events
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_mock.py b/tests/test_ext_autodoc_mock.py
index aa2da86c89c..08157ac4508 100644
--- a/tests/test_ext_autodoc_mock.py
+++ b/tests/test_ext_autodoc_mock.py
@@ -4,7 +4,7 @@
 
     Test the autodoc extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autodoc_private_members.py b/tests/test_ext_autodoc_private_members.py
index 6bce5ce7884..90fbe6707da 100644
--- a/tests/test_ext_autodoc_private_members.py
+++ b/tests/test_ext_autodoc_private_members.py
@@ -4,7 +4,7 @@
 
     Test the autodoc extension.  This tests mainly for private-members option.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autosectionlabel.py b/tests/test_ext_autosectionlabel.py
index 310435d8edb..0afe13b41d6 100644
--- a/tests/test_ext_autosectionlabel.py
+++ b/tests/test_ext_autosectionlabel.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.autosectionlabel extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_autosummary.py b/tests/test_ext_autosummary.py
index 6e0ca21c723..ae4500ad376 100644
--- a/tests/test_ext_autosummary.py
+++ b/tests/test_ext_autosummary.py
@@ -4,7 +4,7 @@
 
     Test the autosummary extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_coverage.py b/tests/test_ext_coverage.py
index 033a1c1b169..6172c502d8f 100644
--- a/tests/test_ext_coverage.py
+++ b/tests/test_ext_coverage.py
@@ -4,7 +4,7 @@
 
     Test the coverage builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_doctest.py b/tests/test_ext_doctest.py
index 0ba53e79112..729067b4d10 100644
--- a/tests/test_ext_doctest.py
+++ b/tests/test_ext_doctest.py
@@ -4,7 +4,7 @@
 
     Test the doctest extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import os
diff --git a/tests/test_ext_duration.py b/tests/test_ext_duration.py
index debe7fa5687..681530cefa8 100644
--- a/tests/test_ext_duration.py
+++ b/tests/test_ext_duration.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.duration extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_githubpages.py b/tests/test_ext_githubpages.py
index 41dbe4f60d7..5c13a8f9795 100644
--- a/tests/test_ext_githubpages.py
+++ b/tests/test_ext_githubpages.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.githubpages extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_graphviz.py b/tests/test_ext_graphviz.py
index a8de950cebb..a19261e962f 100644
--- a/tests/test_ext_graphviz.py
+++ b/tests/test_ext_graphviz.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.graphviz extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_ifconfig.py b/tests/test_ext_ifconfig.py
index 232ddf0d86e..eea2386c3eb 100644
--- a/tests/test_ext_ifconfig.py
+++ b/tests/test_ext_ifconfig.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.ifconfig extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_imgconverter.py b/tests/test_ext_imgconverter.py
index 075446b0aa1..5f6f236cf42 100644
--- a/tests/test_ext_imgconverter.py
+++ b/tests/test_ext_imgconverter.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.imgconverter extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_inheritance_diagram.py b/tests/test_ext_inheritance_diagram.py
index 4eff0e35c26..eada88e912c 100644
--- a/tests/test_ext_inheritance_diagram.py
+++ b/tests/test_ext_inheritance_diagram.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.inheritance_diagram extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_intersphinx.py b/tests/test_ext_intersphinx.py
index 2fd324009c2..c4fddf029ff 100644
--- a/tests/test_ext_intersphinx.py
+++ b/tests/test_ext_intersphinx.py
@@ -4,7 +4,7 @@
 
     Test the intersphinx extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_math.py b/tests/test_ext_math.py
index 4df7d47c7c2..28c2c35a5b5 100644
--- a/tests/test_ext_math.py
+++ b/tests/test_ext_math.py
@@ -4,7 +4,7 @@
 
     Test math extensions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_napoleon.py b/tests/test_ext_napoleon.py
index c271a7c9a8a..d6334b9ebd7 100644
--- a/tests/test_ext_napoleon.py
+++ b/tests/test_ext_napoleon.py
@@ -5,7 +5,7 @@
     Tests for :mod:`sphinx.ext.napoleon.__init__` module.
 
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_napoleon_docstring.py b/tests/test_ext_napoleon_docstring.py
index e6127fe559d..ec5f90ac201 100644
--- a/tests/test_ext_napoleon_docstring.py
+++ b/tests/test_ext_napoleon_docstring.py
@@ -5,7 +5,7 @@
     Tests for :mod:`sphinx.ext.napoleon.docstring` module.
 
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_napoleon_iterators.py b/tests/test_ext_napoleon_iterators.py
index 456287e7c4d..45b558794ff 100644
--- a/tests/test_ext_napoleon_iterators.py
+++ b/tests/test_ext_napoleon_iterators.py
@@ -5,7 +5,7 @@
     Tests for :mod:`sphinx.ext.napoleon.iterators` module.
 
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_todo.py b/tests/test_ext_todo.py
index 7b4fdeabe24..b6fb2549c0c 100644
--- a/tests/test_ext_todo.py
+++ b/tests/test_ext_todo.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.todo extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_ext_viewcode.py b/tests/test_ext_viewcode.py
index 3d9ea27d7f3..79864095b51 100644
--- a/tests/test_ext_viewcode.py
+++ b/tests/test_ext_viewcode.py
@@ -4,7 +4,7 @@
 
     Test sphinx.ext.viewcode extension.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_highlighting.py b/tests/test_highlighting.py
index 19ca8bde9e6..a51e256882a 100644
--- a/tests/test_highlighting.py
+++ b/tests/test_highlighting.py
@@ -4,7 +4,7 @@
 
     Test the Pygments highlighting bridge.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_intl.py b/tests/test_intl.py
index d96733e4a40..00f59959541 100644
--- a/tests/test_intl.py
+++ b/tests/test_intl.py
@@ -5,7 +5,7 @@
     Test message patching for internationalization purposes.  Runs the text
     builder in the test root.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_locale.py b/tests/test_locale.py
index a744a5ff773..5d3dbf17f1e 100644
--- a/tests/test_locale.py
+++ b/tests/test_locale.py
@@ -4,7 +4,7 @@
 
     Test locale.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_markup.py b/tests/test_markup.py
index a2bcb2dc1fe..b56ddb4eed6 100644
--- a/tests/test_markup.py
+++ b/tests/test_markup.py
@@ -4,7 +4,7 @@
 
     Test various Sphinx-specific markup extensions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
index e345488e674..46538643051 100644
--- a/tests/test_metadata.py
+++ b/tests/test_metadata.py
@@ -4,7 +4,7 @@
 
     Test our handling of metadata in files with bibliographic metadata.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_parser.py b/tests/test_parser.py
index f76e004d64c..df22750e396 100644
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -4,7 +4,7 @@
 
     Tests parsers module.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_project.py b/tests/test_project.py
index 906a52bfe41..03fa1d49f7d 100644
--- a/tests/test_project.py
+++ b/tests/test_project.py
@@ -4,7 +4,7 @@
 
     Tests project module.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_pycode.py b/tests/test_pycode.py
index 3d69e53cb81..bbcc42a52f2 100644
--- a/tests/test_pycode.py
+++ b/tests/test_pycode.py
@@ -4,7 +4,7 @@
 
     Test pycode.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_pycode_ast.py b/tests/test_pycode_ast.py
index bbff64dd060..e8006235172 100644
--- a/tests/test_pycode_ast.py
+++ b/tests/test_pycode_ast.py
@@ -4,7 +4,7 @@
 
     Test pycode.ast
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_pycode_parser.py b/tests/test_pycode_parser.py
index 71847f04f57..9169315fc9f 100644
--- a/tests/test_pycode_parser.py
+++ b/tests/test_pycode_parser.py
@@ -4,7 +4,7 @@
 
     Test pycode.parser.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_quickstart.py b/tests/test_quickstart.py
index 26f1d0d9ed5..11086f5f65c 100644
--- a/tests/test_quickstart.py
+++ b/tests/test_quickstart.py
@@ -4,7 +4,7 @@
 
     Test the sphinx.quickstart module.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_roles.py b/tests/test_roles.py
index d1ed7f439a5..553a50853fa 100644
--- a/tests/test_roles.py
+++ b/tests/test_roles.py
@@ -4,7 +4,7 @@
 
     Test sphinx.roles
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_search.py b/tests/test_search.py
index 5f8e4630219..1ceb6d55b56 100644
--- a/tests/test_search.py
+++ b/tests/test_search.py
@@ -4,7 +4,7 @@
 
     Test the search index builder.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_setup_command.py b/tests/test_setup_command.py
index 14a687ada52..52dad14fd4e 100644
--- a/tests/test_setup_command.py
+++ b/tests/test_setup_command.py
@@ -4,7 +4,7 @@
 
     Test setup_command for distutils.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_smartquotes.py b/tests/test_smartquotes.py
index 6276e6a74cf..0cc0681dc95 100644
--- a/tests/test_smartquotes.py
+++ b/tests/test_smartquotes.py
@@ -4,7 +4,7 @@
 
     Test smart quotes.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_templating.py b/tests/test_templating.py
index f2c1d563ba4..3a7c5821683 100644
--- a/tests/test_templating.py
+++ b/tests/test_templating.py
@@ -4,7 +4,7 @@
 
     Test templating.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_theming.py b/tests/test_theming.py
index f1cb5a3e8bf..9d447537ccf 100644
--- a/tests/test_theming.py
+++ b/tests/test_theming.py
@@ -4,7 +4,7 @@
 
     Test the Theme class.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_toctree.py b/tests/test_toctree.py
index 38886769af3..7a9f7a57808 100644
--- a/tests/test_toctree.py
+++ b/tests/test_toctree.py
@@ -4,7 +4,7 @@
 
     Test the HTML builder and check output against XPath.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 import re
diff --git a/tests/test_transforms_post_transforms_code.py b/tests/test_transforms_post_transforms_code.py
index 2e5da05ae28..449cba78a74 100644
--- a/tests/test_transforms_post_transforms_code.py
+++ b/tests/test_transforms_post_transforms_code.py
@@ -2,7 +2,7 @@
     test_transforms_post_transforms_code
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util.py b/tests/test_util.py
index 2d03ed89ab8..9b25aac5803 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -4,7 +4,7 @@
 
     Tests util functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_docstrings.py b/tests/test_util_docstrings.py
index e6ae32306dd..543feca2ab5 100644
--- a/tests/test_util_docstrings.py
+++ b/tests/test_util_docstrings.py
@@ -4,7 +4,7 @@
 
     Test sphinx.util.docstrings.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_docutils.py b/tests/test_util_docutils.py
index 41be9b8d133..9c4e373cf3d 100644
--- a/tests/test_util_docutils.py
+++ b/tests/test_util_docutils.py
@@ -4,7 +4,7 @@
 
     Tests util.utils functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_fileutil.py b/tests/test_util_fileutil.py
index e9c80d5b64a..fd2f186c2ec 100644
--- a/tests/test_util_fileutil.py
+++ b/tests/test_util_fileutil.py
@@ -4,7 +4,7 @@
 
     Tests sphinx.util.fileutil functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_i18n.py b/tests/test_util_i18n.py
index 7e3a7e2c99b..f15f3cb95de 100644
--- a/tests/test_util_i18n.py
+++ b/tests/test_util_i18n.py
@@ -4,7 +4,7 @@
 
     Test i18n util.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_images.py b/tests/test_util_images.py
index dd2044dffaa..bf71f4c4926 100644
--- a/tests/test_util_images.py
+++ b/tests/test_util_images.py
@@ -4,7 +4,7 @@
 
     Test images util.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_inspect.py b/tests/test_util_inspect.py
index 17070f4d6a9..863f449215e 100644
--- a/tests/test_util_inspect.py
+++ b/tests/test_util_inspect.py
@@ -4,7 +4,7 @@
 
     Tests util.inspect functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_inventory.py b/tests/test_util_inventory.py
index 86400909c3a..f12ae50113d 100644
--- a/tests/test_util_inventory.py
+++ b/tests/test_util_inventory.py
@@ -4,7 +4,7 @@
 
     Test inventory util functions.
 
-    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_logging.py b/tests/test_util_logging.py
index 36034cd92b4..aedbe9e648c 100644
--- a/tests/test_util_logging.py
+++ b/tests/test_util_logging.py
@@ -4,7 +4,7 @@
 
     Test logging util.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_matching.py b/tests/test_util_matching.py
index 9d90f5a903d..008dc626729 100644
--- a/tests/test_util_matching.py
+++ b/tests/test_util_matching.py
@@ -4,7 +4,7 @@
 
     Tests sphinx.util.matching functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 from sphinx.util.matching import Matcher, compile_matchers
diff --git a/tests/test_util_nodes.py b/tests/test_util_nodes.py
index dd41022f334..cb2ae70a82d 100644
--- a/tests/test_util_nodes.py
+++ b/tests/test_util_nodes.py
@@ -4,7 +4,7 @@
 
     Tests uti.nodes functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 from textwrap import dedent
diff --git a/tests/test_util_pycompat.py b/tests/test_util_pycompat.py
index 67e61bb5866..0e395fa7a29 100644
--- a/tests/test_util_pycompat.py
+++ b/tests/test_util_pycompat.py
@@ -4,7 +4,7 @@
 
     Tests sphinx.util.pycompat functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_rst.py b/tests/test_util_rst.py
index 58cf46fe8a6..7e14eb3f7a0 100644
--- a/tests/test_util_rst.py
+++ b/tests/test_util_rst.py
@@ -4,7 +4,7 @@
 
     Tests sphinx.util.rst functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_template.py b/tests/test_util_template.py
index 58ebd7fbbfe..bc325ac9de7 100644
--- a/tests/test_util_template.py
+++ b/tests/test_util_template.py
@@ -4,7 +4,7 @@
 
     Tests sphinx.util.template functions.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_util_typing.py b/tests/test_util_typing.py
index a2565f1e1fc..6611d5f2db6 100644
--- a/tests/test_util_typing.py
+++ b/tests/test_util_typing.py
@@ -4,7 +4,7 @@
 
     Tests util.typing functions.
 
-    :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_versioning.py b/tests/test_versioning.py
index e5f5474cf8d..33fb045ce5b 100644
--- a/tests/test_versioning.py
+++ b/tests/test_versioning.py
@@ -4,7 +4,7 @@
 
     Test the versioning implementation.
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
diff --git a/tests/test_writer_latex.py b/tests/test_writer_latex.py
index 160b14fa1d9..c3f6a622b35 100644
--- a/tests/test_writer_latex.py
+++ b/tests/test_writer_latex.py
@@ -4,7 +4,7 @@
 
     Test the LaTeX writer
 
-    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
+    :copyright: Copyright 2007-2021 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """