diff --git a/docs/conf.py b/docs/conf.py
index 3c6a924..0b47bc4 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -54,7 +54,7 @@
 
 # General information about the project.
 project = 'parsec'
-copyright = '2015-2016, He Tao'
+copyright = '2015-2021, He Tao'
 author = 'He Tao'
 
 # The version info for the project you're documenting, acts as replacement for
@@ -62,9 +62,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '3.5'
+version = '3.7'
 # The full version, including alpha/beta/rc tags.
-release = '3.5'
+release = '3.7'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/setup.py b/setup.py
index 7b7b6cc..95723ef 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name = 'parsec',
-    version = '3.6',
+    version = '3.7',
     description = 'parser combinator.',
     long_description = 'A universal Python parser combinator library inspired by Parsec library of Haskell.',
     author = 'He Tao',