diff --git a/CHANGELOG.md b/CHANGELOG.md
index e63fea6..248e000 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 Changelog
 =========
 
+## v3.1.0 - 2021/12/22
+
+- Added support for Django 4.0
+
 ## v3.0.0 - 2021/05/10
 
 - Dropped support for Python 2
diff --git a/rules/__init__.py b/rules/__init__.py
index 23fc3b7..4295de5 100644
--- a/rules/__init__.py
+++ b/rules/__init__.py
@@ -21,4 +21,4 @@
     test_rule,
 )
 
-VERSION = (3, 0, 0, "final", 1)
+VERSION = (3, 1, 0, "final", 1)
diff --git a/tests/testapp/urls.py b/tests/testapp/urls.py
index e7229bf..b3fcde2 100644
--- a/tests/testapp/urls.py
+++ b/tests/testapp/urls.py
@@ -1,5 +1,5 @@
-from django.conf.urls import url
 from django.contrib import admin
+from django.urls import re_path
 
 from .views import (
     BookCreateView,
@@ -18,40 +18,40 @@
 admin.autodiscover()
 
 urlpatterns = [
-    url(r"^admin/", admin.site.urls),
+    re_path(r"^admin/", admin.site.urls),
     # Function-based views
-    url(r"^(?P<book_id>\d+)/change/$", change_book, name="change_book"),
-    url(r"^(?P<book_id>\d+)/delete/$", delete_book, name="delete_book"),
-    url(r"^(?P<book_id>\d+)/raise/$", view_that_raises, name="view_that_raises"),
-    url(r"^(?P<book_id>\d+)/object/$", view_with_object, name="view_with_object"),
-    url(
+    re_path(r"^(?P<book_id>\d+)/change/$", change_book, name="change_book"),
+    re_path(r"^(?P<book_id>\d+)/delete/$", delete_book, name="delete_book"),
+    re_path(r"^(?P<book_id>\d+)/raise/$", view_that_raises, name="view_that_raises"),
+    re_path(r"^(?P<book_id>\d+)/object/$", view_with_object, name="view_with_object"),
+    re_path(
         r"^(?P<book_id>\d+)/list/$",
         view_with_permission_list,
         name="view_with_permission_list",
     ),
     # Class-based views
-    url(r"^cbv/create/$", BookCreateView.as_view(), name="cbv.create_book"),
-    url(
+    re_path(r"^cbv/create/$", BookCreateView.as_view(), name="cbv.create_book"),
+    re_path(
         r"^cbv/(?P<book_id>\d+)/change/$",
         BookUpdateView.as_view(),
         name="cbv.change_book",
     ),
-    url(
+    re_path(
         r"^cbv/(?P<book_id>\d+)/delete/$",
         BookDeleteView.as_view(),
         name="cbv.delete_book",
     ),
-    url(
+    re_path(
         r"^cbv/(?P<book_id>\d+)/raise/$",
         ViewThatRaises.as_view(),
         name="cbv.view_that_raises",
     ),
-    url(
+    re_path(
         r"^cbv/(?P<book_id>\d+)/list/$",
         ViewWithPermissionList.as_view(),
         name="cbv.view_with_permission_list",
     ),
-    url(
+    re_path(
         r"^cbv/(?P<book_id>\d+)/change-error/$",
         BookUpdateErrorView.as_view(),
         name="cbv.change_book_error",