diff --git a/backend/order/signals.py b/backend/order/signals.py
index c650883..7d53ab5 100644
--- a/backend/order/signals.py
+++ b/backend/order/signals.py
@@ -20,3 +20,5 @@ def update_cart_price_fields(order):
 def update_sell_data(order):
     pass
 
+def update_quantity(order):
+    pass