Added saving date

apps/notification/models.py

@@ -119,6 +119,7 @@ class Subscriber(ProjectBaseMixin):
         old_subscribes_types = [sub for sub in old_subscribes if sub.id not in new_ids]
         old_subscribes = Subscribe.objects.filter(subscriber=self, subscription_types__in=old_subscribes_types)
         old_subscribes.update(unsubscribe_date=now())
+        old_subscribes.save()
 
         self.save()