diff --git a/cartridge/shop/models.py b/cartridge/shop/models.py
index 26bb7f00..cf574d2a 100644
--- a/cartridge/shop/models.py
+++ b/cartridge/shop/models.py
@@ -607,6 +607,7 @@ def __iter__(self):
         ensuring the items are only retrieved once and cached.
         """
         if not hasattr(self, "_cached_items"):
+            self.save()
             self._cached_items = self.items.all()
         return iter(self._cached_items)