diff --git a/backend/order/models.py b/backend/order/models.py
index a3f3617..d41f476 100644
--- a/backend/order/models.py
+++ b/backend/order/models.py
@@ -1,8 +1,10 @@
 from django.db import models
-from account.models import User, UserAddressModel
+from account.models import User, UserAddressModel, PushSubscription
 from product.models import ProductModel, ProductVariant
 from django.utils import timezone
 from .execptions import DiscountNotAvailableError
+
+
 class DiscountCode(models.Model):
     name = models.CharField(max_length=50, verbose_name='کد تخفیف')
     percent = models.DecimalField(max_digits=4, decimal_places=2, verbose_name='درصد')