diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cb0dc5bb..9a85d90a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,23 +9,23 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
     - name: Get pip cache dir
       id: pip-cache
       run: |
-        echo "::set-output name=dir::$(pip cache dir)"
+        echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
     - name: Cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ${{ steps.pip-cache.outputs.dir }}
         key:
diff --git a/knox_project/settings.py b/knox_project/settings.py
index caa79f08..d5b6c40c 100644
--- a/knox_project/settings.py
+++ b/knox_project/settings.py
@@ -49,7 +49,7 @@
 LANGUAGE_CODE = 'en-us'
 TIME_ZONE = 'UTC'
 USE_I18N = True
-USE_L10N = True
+USE_L10N = True  # Deprecated since django 4.0.
 USE_TZ = True
 
 STATIC_URL = '/static/'
diff --git a/setup.py b/setup.py
index 645da21e..fefc3fc5 100644
--- a/setup.py
+++ b/setup.py
@@ -51,6 +51,7 @@
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
     ],
 
     # What does your project relate to?
diff --git a/tox.ini b/tox.ini
index ef5d6b05..e60a8d0e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ envlist =
     flake8,
     py{36,37,38,39,310}-django32,
     py{38,39,310}-django40,
+    py{38,39,310,311}-django41,
 
 [testenv:flake8]
 deps = flake8
@@ -30,7 +31,8 @@ setenv =
 deps =
     django32: Django>=3.2,<3.3
     django40: Django>=4.0,<4.1
-    markdown<3.0
+    django41: Django>=4.1.3,<4.2
+    markdown>=3.0
     isort>=5.0
     djangorestframework
     freezegun
@@ -46,5 +48,6 @@ python =
     3.6: py36
     3.7: py37
     3.8: py38
-    3.9: py39, isort, flake8
-    3.10: py310
+    3.9: py39
+    3.10: py310, isort, flake8
+    3.11: py311