diff --git a/solution/dog_shelters/apps.py b/solution/dog_shelters/apps.py
index 525c293..412e392 100644
--- a/solution/dog_shelters/apps.py
+++ b/solution/dog_shelters/apps.py
@@ -2,4 +2,5 @@
 
 
 class DogSheltersConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'    
     name = 'dog_shelters'
diff --git a/starter/dog_shelters/apps.py b/starter/dog_shelters/apps.py
index 525c293..412e392 100644
--- a/starter/dog_shelters/apps.py
+++ b/starter/dog_shelters/apps.py
@@ -2,4 +2,5 @@
 
 
 class DogSheltersConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'    
     name = 'dog_shelters'