Confirm support Django 4.0.

CHANGES.rst

@@ -3,6 +3,7 @@ Changes
 =======
 
 - Drop Django 3.1 support.
+- Confirm support for Django 4.0
 
 0.9.1
 -----

setup.py

@@ -33,6 +33,7 @@ setup(
         "Framework :: Django",
         "Framework :: Django :: 2.2",
         "Framework :: Django :: 3.2",
+        "Framework :: Django :: 4.0",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",

tox.ini

@@ -2,7 +2,7 @@
 envlist =
     # list of supported Django/Python versions:
     py{36,37,38,39,py3}-dj{22,32}
-    py{38,39}-djmain
+    py{38,39}-dj{40,main}
     py38-{lint,docs}
 
 [gh-actions]
@@ -17,7 +17,8 @@ python =
 deps =
     -rrequirements.txt
     dj22: django>=2.2,<2.3
-    dj32: django>=3.2,<3.3
+    dj32: django>=3.2,<4.0
+    dj40: django>=4.0,<4.1
     djmain: https://github.com/django/django/archive/main.tar.gz
 usedevelop = True
 commands =