diff --git a/CHANGES b/CHANGES
index 91820c1..d5397eb 100644
--- a/CHANGES
+++ b/CHANGES
@@ -10,6 +10,7 @@ Version 0.9.7 (unreleased)
 * Remove six as a dependency
 * Move context and comment hints into the right-most column (#260 thanks @jieter)
 * Add extra styles block to the base template (#261 thanks @Frohus and @adamjforster)
+* Test against Django 4.0-dev
 
 
 Version 0.9.6
diff --git a/rosetta/urls.py b/rosetta/urls.py
index 9232720..0d8d8b2 100644
--- a/rosetta/urls.py
+++ b/rosetta/urls.py
@@ -1,10 +1,8 @@
-from django.conf.urls import re_path
-from django.urls import reverse_lazy
+from django.urls import re_path, reverse_lazy
 from django.views.generic.base import RedirectView
 
 from . import views
 
-
 urlpatterns = [
     re_path(
         r'^$',
diff --git a/testproject/urls.py b/testproject/urls.py
index 798cd99..b2782a6 100644
--- a/testproject/urls.py
+++ b/testproject/urls.py
@@ -1,7 +1,6 @@
-from django.conf.urls import include, re_path
 from django.contrib import admin
 from django.contrib.staticfiles.urls import staticfiles_urlpatterns
-
+from django.urls import include, re_path
 
 admin.autodiscover()
 
diff --git a/tox.ini b/tox.ini
index 6f5e42f..627ecec 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,15 +2,15 @@
 envlist =
         flake8,
         py{36,37,38,39}-django{22,30,31,32},
-
+        py{38,39}-django40,
         gettext,
         docs
 
 
 [gh-actions]
 python =
-  3.9: py39-django22, py39-django30, py39-django31, py39-django32
-  3.8: py38-django22, py38-django30, py38-django31, py38-django32
+  3.9: py39-django22, py39-django30, py39-django31, py39-django32, py39-django40
+  3.8: py38-django22, py38-django30, py38-django31, py38-django32, py38-django40
   3.7: py37-django22, py37-django30, py37-django31, py37-django32, flake8
   3.6: py36-django22, py36-django30, py36-django31, py36-django32, gettext, docs
 
@@ -33,9 +33,10 @@ deps =
         django30: Django>=3.0,<=3.0.99
         django31: Django>=3.1,<=3.1.99
         django32: Django>=3.2a1,<=3.2.99
+        django40: git+https://github.com/django/django.git
 
-        python-memcached
-        django32: pymemcache
+        django{22,30,31}: python-memcached
+        django{32,40}: pymemcache
         requests
         polib>=1.1.0
         goslate