diff --git a/apps/authentication/api/v1/serializers/serializer.py b/apps/authentication/api/v1/serializers/serializer.py
index d18f830..70238fd 100644
--- a/apps/authentication/api/v1/serializers/serializer.py
+++ b/apps/authentication/api/v1/serializers/serializer.py
@@ -59,6 +59,8 @@ class BankAccountSerializer(serializers.ModelSerializer):
         if self.Meta.model.objects.filter(Q(account=account) | Q(card=card) | Q(sheba=sheba)).exists():
             raise BankAccountExistException()
 
+        return attrs
+
     def update(self, instance, validated_data):
         """ update user bank account information """
         instance.name = validated_data.get('name', instance.name)