diff --git a/setup.cfg b/setup.cfg
index d5095ba..eea740d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,34 +1,31 @@
 [metadata]
 name = sphinxcontrib-apidoc
 summary = A Sphinx extension for running 'sphinx-apidoc' on each build
-description_file =
-    README.rst
+description_file = README.rst
+description_content_type = text/x-rst; charset=UTF-8
 author = Stephen Finucane
 author_email = stephen@that.guru
 url = https://github.com/sphinx-contrib/apidoc
 project_urls =
     Bug Tracker = https://github.com/sphinx-contrib/apidoc/issues
     Source Code = https://github.com/sphinx-contrib/apidoc
+license = BSD License
 classifiers =
     Development Status :: 4 - Beta
     Environment :: Console
-    Environment :: Web Environment
     Framework :: Sphinx :: Extension
     Intended Audience :: Developers
+    Intended Audience :: Information Technology
     License :: OSI Approved :: BSD License
     Operating System :: OS Independent
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.4
-    Programming Language :: Python :: 3.5
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: Implementation :: CPython
-    Programming Language :: Python :: Implementation :: PyPy
+    Programming Language :: Python :: 3 :: Only
     Topic :: Documentation
     Topic :: Documentation :: Sphinx
     Topic :: Utilities
+python_requires = >=3.8
+keywords = sphinx
 
 [files]
 packages =
@@ -36,18 +33,14 @@ packages =
 namespace_packages =
     sphinxcontrib
 
-[wheel]
-universal = 1
-
 [mypy]
-python_version = 2.7
-show_column_numbers = True
-show_error_context = True
-ignore_missing_imports = True
+show_column_numbers = true
+show_error_context = true
+ignore_missing_imports = true
 follow_imports = skip
-incremental = True
-check_untyped_defs = True
-warn_unused_ignores = True
+incremental = true
+check_untyped_defs = true
+warn_unused_ignores = true
 
 [flake8]
 show-source = True
diff --git a/tox.ini b/tox.ini
index ffef243..4b1e1b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,10 @@
 [tox]
-minversion = 2.0
-envlist = py{27,34,35,36,py},style
+minversion = 4.4
+envlist = py{38,39,310,311},style
 
 [testenv]
-deps = -r{toxinidir}/test-requirements.txt
+deps =
+    -r{toxinidir}/test-requirements.txt
 commands=
     pytest