Confirm support for Django 4.0

CHANGES.rst

@@ -4,6 +4,7 @@ Changelog
 Unreleased
 ----------
 
+- Confirm support for `Django 4.0`
 
 4.2.0 (2021-10-11)
 ------------------

setup.py

@@ -47,6 +47,7 @@ setup(
         'Framework :: Django :: 2.2',
         'Framework :: Django :: 3.1',
         'Framework :: Django :: 3.2',
+        'Framework :: Django :: 4.0',
     ],
     zip_safe=False,
     tests_require=['Django>=2.2'],

tox.ini

@@ -2,7 +2,7 @@
 envlist =
     py{36,37,38,39}-dj{22,31}
     py{36,37,38,39,310}-dj32
-    py{38,39,310}-djmain
+    py{38,39,310}-dj{40,main}
     flake8
     isort
 
@@ -21,6 +21,7 @@ deps =
     dj22: Django==2.2.*
     dj31: Django==3.1.*
     dj32: Django==3.2.*
+    dj40: Django==4.0.*
     djmain: https://github.com/django/django/archive/main.tar.gz
 ignore_outcome =
     djmain: True