diff --git a/requirements-tests39.in b/requirements-tests39.in
index 21c505b..35e7fe9 100644
--- a/requirements-tests39.in
+++ b/requirements-tests39.in
@@ -1,6 +1,6 @@
-# for python 3.9 *and newer*
-pytest
-pytest-cov
+# For Python 3.9 *and newer*
+pytest>=7.4.2
+pytest-cov>=4.1.0
 flake8
 autopep8
 docformatter
diff --git a/requirements-tests39.txt b/requirements-tests39.txt
index 465cecb..fbc3f3c 100644
--- a/requirements-tests39.txt
+++ b/requirements-tests39.txt
@@ -8,8 +8,6 @@ astroid==2.13.2
     # via
     #   -r requirements-tests39.in
     #   pylint
-attrs==21.4.0
-    # via pytest
 autopep8==1.6.0
     # via -r requirements-tests39.in
 coverage[toml]==6.3.2
@@ -24,6 +22,8 @@ docutils==0.18.1
     # via
     #   doc8
     #   restructuredtext-lint
+exceptiongroup==1.1.3
+    # via pytest
 flake8==4.0.1
     # via -r requirements-tests39.in
 iniconfig==1.1.1
@@ -46,8 +46,6 @@ platformdirs==2.5.1
     # via pylint
 pluggy==1.0.0
     # via pytest
-py==1.11.0
-    # via pytest
 pycodestyle==2.8.0
     # via
     #   autopep8
@@ -64,11 +62,11 @@ pylint==2.15.10
     # via -r requirements-tests39.in
 pyparsing==3.0.7
     # via packaging
-pytest==7.1.1
+pytest==7.4.2
     # via
     #   -r requirements-tests39.in
     #   pytest-cov
-pytest-cov==3.0.0
+pytest-cov==4.1.0
     # via -r requirements-tests39.in
 restructuredtext-lint==1.4.0
     # via
diff --git a/setup.py b/setup.py
index fce95f4..ec302f4 100755
--- a/setup.py
+++ b/setup.py
@@ -72,6 +72,10 @@ def main():
             'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: 3.7',
             'Programming Language :: Python :: 3.8',
+            'Programming Language :: Python :: 3.9',
+            'Programming Language :: Python :: 3.10',
+            'Programming Language :: Python :: 3.11',
+            'Programming Language :: Python :: 3.12',
             'Topic :: Software Development :: Libraries',
             'Topic :: Software Development :: Localization',
             'Topic :: Software Development :: Internationalization',
diff --git a/tox.ini b/tox.ini
index a29ed54..8280b9f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = update, compile, autopep8, docformatter, isort, pylint, flake8, pydocstyle, docs, py26, py27, py34, py35, py36, py37, py38, py39, py310
+envlist = update, compile, autopep8, docformatter, isort, pylint, flake8, pydocstyle, docs, py{26, 27, 34, 35, 36, 37, 38, 39, 310, 311, 312}
 skip_missing_interpreters = true
 
 [testenv]