diff --git a/digihoxbackend/db_router.py b/digihoxbackend/db_router.py
index bb02d6e..b1f5007 100644
--- a/digihoxbackend/db_router.py
+++ b/digihoxbackend/db_router.py
@@ -25,6 +25,9 @@ class CRMDatabaseRouter:
         return True
 
     def allow_migrate(self, db, app_label, model_name=None, **hints):
+        if app_label in ['auth', 'contenttypes', 'admin', 'sessions', 'crm']:
+            return db == 'default'
+
         if app_label == 'seller_models':
             if model_name == 'product':
                 return db == 'product_db'
@@ -36,4 +39,4 @@ class CRMDatabaseRouter:
         
         if db in ['seller_db', 'product_db', 'customer_db']:
             return False
-        return True
+        return db == 'default'