diff --git a/voting/storage.py b/voting/storage.py
index f348419..5603f74 100644
--- a/voting/storage.py
+++ b/voting/storage.py
@@ -61,6 +61,7 @@ class Storage(object):
     def push(self, voting: Voting) -> None:
         """Push a voting to the in-memory voting list."""
         self.votings.append(voting)
+        self.__changed = True
 
     def pop(self, title: str) -> Voting:
         """Pop a voting from the in-memory voting list.