diff --git a/netbox/users/migrations/0006_custom_group_model.py b/netbox/users/migrations/0006_custom_group_model.py
index dd6c7e9d5..352ea2a2d 100644
--- a/netbox/users/migrations/0006_custom_group_model.py
+++ b/netbox/users/migrations/0006_custom_group_model.py
@@ -52,4 +52,9 @@ class Migration(migrations.Migration):
         migrations.DeleteModel(
             name='NetBoxGroup',
         ),
+
+        # Delete groups from the old table
+        migrations.RunSQL(
+            "DELETE from auth_group"
+        ),
     ]