diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index da43049..d259dbb 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -17,6 +17,7 @@ Fixes
 -----
 * Fix unicode sandwich issue in cas_server.utils.update_url
 * Fix DeprecationWarning about default_app_config in Django 3.2
+* Fix DeprecationWarning about USE_L10N in Django 4.0
 
 Removed
 -------
diff --git a/cas_server/tests/settings.py b/cas_server/tests/settings.py
index 1a06d3c..5fb28e5 100644
--- a/cas_server/tests/settings.py
+++ b/cas_server/tests/settings.py
@@ -90,7 +90,8 @@ TIME_ZONE = 'UTC'
 
 USE_I18N = True
 
-USE_L10N = True
+if django.VERSION < (4, 0):
+    USE_L10N = True
 
 USE_TZ = True