diff --git a/pattern_library/apps.py b/pattern_library/apps.py
index 55a5636a..4fd36320 100644
--- a/pattern_library/apps.py
+++ b/pattern_library/apps.py
@@ -3,3 +3,4 @@
 
 class PatternLibraryAppConfig(AppConfig):
     name = 'pattern_library'
+    default_auto_field = 'django.db.models.AutoField'