diff --git a/cab/tests/settings.py b/cab/tests/settings.py
index 7b8986b1..de2b5764 100644
--- a/cab/tests/settings.py
+++ b/cab/tests/settings.py
@@ -68,3 +68,5 @@
     ('0.0', '0.0'),
     ('1.1', '1.1'),
 )
+
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'
diff --git a/djangosnippets/settings/base.py b/djangosnippets/settings/base.py
index 731b6e78..e4d1ebc7 100644
--- a/djangosnippets/settings/base.py
+++ b/djangosnippets/settings/base.py
@@ -175,3 +175,5 @@ def user_url(user):
         'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
     ]
 }
+
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'