diff --git a/tests/settings.py b/tests/settings.py
index <HASH>..<HASH> 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -117,3 +117,5 @@ DJSTRIPE_WEBHOOK_VALIDATION = "verify_signature"
 DJSTRIPE_WEBHOOK_SECRET = os.environ.get("DJSTRIPE_TEST_WEBHOOK_SECRET", "whsec_XXXXX")
 
 STATIC_URL = "/static/"
+
+DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
Set DEFAULT_AUTO_FIELD in tests