diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c1aad0d0..2d954e08 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         os: [ubuntu-20.04]
         python-version: ['3.8']
-        toxenv: [django22, django30, django31, django32, quality, docs, without-django]
+        toxenv: [quality, docs, without-django, django32, django40]
 
     steps:
     - uses: actions/checkout@v2
@@ -36,7 +36,7 @@ jobs:
       run: tox -- --hypothesis-profile=ci
 
     - name: Run Coverage
-      if: matrix.python-version == '3.8' && matrix.toxenv=='django22'
+      if: matrix.python-version == '3.8' && matrix.toxenv=='django32'
       uses: codecov/codecov-action@v1
       with:
         flags: unittests
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 5dcbf3d0..8d92f0c2 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,3 +1,7 @@
+# 2.3.0
+
+* Added Support for Django40 and removed Django22, 30 and 31
+
 # 2.2.2
 
 * Moved django pin from django.in to constraint.txt. Upgraded dependencies
diff --git a/opaque_keys/__init__.py b/opaque_keys/__init__.py
index fce7bf75..50d00270 100644
--- a/opaque_keys/__init__.py
+++ b/opaque_keys/__init__.py
@@ -8,12 +8,12 @@
 """
 from abc import ABCMeta, abstractmethod
 from functools import total_ordering
-from stevedore.enabled import EnabledExtensionManager
 
 # pylint: disable=wrong-import-order
 from _collections import defaultdict
+from stevedore.enabled import EnabledExtensionManager
 
-__version__ = '2.2.2'
+__version__ = '2.3.0'
 
 
 class InvalidKeyError(Exception):
diff --git a/opaque_keys/edx/django/models.py b/opaque_keys/edx/django/models.py
index 1dd52daa..321ef9f2 100644
--- a/opaque_keys/edx/django/models.py
+++ b/opaque_keys/edx/django/models.py
@@ -2,6 +2,7 @@
 Useful django models for implementing XBlock infrastructure in django.
 If Django is unavailable, none of the classes below will work as intended.
 """
+# pylint: disable=abstract-method
 import logging
 import warnings
 
@@ -27,6 +28,7 @@ class _Creator:
 
     A placeholder class that provides a way to set the attribute on the model.
     """
+
     def __init__(self, field):
         self.field = field
 
@@ -45,6 +47,7 @@ class CreatorMixin:
     Mixin class to provide SubfieldBase functionality to django fields.
     See: https://docs.djangoproject.com/en/1.11/releases/1.8/#subfieldbase
     """
+
     def contribute_to_class(self, cls, name, *args, **kwargs):
         super().contribute_to_class(cls, name, *args, **kwargs)
         setattr(cls, name, _Creator(self))
@@ -168,6 +171,7 @@ class OpaqueKeyFieldEmptyLookupIsNull(IsNull):
     This overrides the default __isnull model filter to help enforce the special way
     we handle null / empty values in OpaqueKeyFields.
     """
+
     def get_prep_lookup(self):
         raise TypeError("Use this field's .Empty member rather than None or __isnull "
                         "to query for missing objects of this type.")
@@ -214,6 +218,7 @@ class LocationKeyField(UsageKeyField):
     """
     A django Field that stores a UsageKey object as a string.
     """
+
     def __init__(self, *args, **kwargs):
         warnings.warn("LocationKeyField is deprecated. Please use UsageKeyField instead.", stacklevel=2)
         super().__init__(*args, **kwargs)
diff --git a/setup.py b/setup.py
index 35ac52ed..b6160a5a 100644
--- a/setup.py
+++ b/setup.py
@@ -5,9 +5,6 @@
 import os
 import re
 
-import os
-import re
-
 from setuptools import find_packages, setup
 
 
@@ -106,10 +103,8 @@ def get_version(*file_paths):
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.8",
         "Framework :: Django",
-        "Framework :: Django :: 2.2",
-        "Framework :: Django :: 3.0",
-        "Framework :: Django :: 3.1",
         "Framework :: Django :: 3.2",
+        "Framework :: Django :: 4.0",
     ],
     # We are including the tests because other libraries do use mixins from them.
     packages=find_packages(),
diff --git a/tox.ini b/tox.ini
index 42efa097..149f9a95 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,37 +1,33 @@
 [tox]
-envlist =  py38-django{22,30,31,32},quality,without-django
+envlist = py38-django{32,40},quality,without-django
 skip_missing_interpreters = True
 
 [testenv]
-deps =
-	django22: Django>=2.2,<2.3
-	django30: Django>=3.0,<3.1
-	django31: Django>=3.1,<3.2
-	django32: Django>=3.2,<3.3
-	-r{toxinidir}/requirements/django-test.txt
-commands = pytest --disable-pytest-warnings --nomigrations {posargs}
+deps = 
+    django32: Django>=3.2,<4.0
+    django40: Django>=4.0,<4.1
+    -r{toxinidir}/requirements/django-test.txt
+commands = pytest -v --disable-pytest-warnings --nomigrations {posargs}
 
 [testenv:without-django]
-deps =
-	-r{toxinidir}/requirements/test.txt
+deps = 
+    -r{toxinidir}/requirements/test.txt
 commands = pytest --disable-pytest-warnings --ignore=opaque_keys/edx/django {posargs}
 
 [testenv:quality]
-commands =
-	pycodestyle --config=.pep8 opaque_keys
-	pylint --rcfile=pylintrc opaque_keys
+commands = 
+    pycodestyle --config=.pep8 opaque_keys
+    pylint --rcfile=pylintrc opaque_keys
 
 [testenv:docs]
-deps =
+deps = 
     -r{toxinidir}/requirements/doc.txt
-allowlist_externals =
+allowlist_externals = 
     make
     env
-setenv =
-# -W will treat warnings as errors.
+setenv = 
     SPHINXOPTS = -W
-commands =
-# -e allows for overriding setting from the environment.
-# -C changes the directory to `docs` before running the command.
+commands = 
     make -e -C docs clean
     make -e -C docs html
+