diff --git a/quetz/database.py b/quetz/database.py
index f0d18015..0ba97cf8 100644
--- a/quetz/database.py
+++ b/quetz/database.py
@@ -66,7 +66,7 @@ def get_session_maker(
     bind: sqlalchemy.engine.Engine | sqlalchemy.engine.Connection,
 ) -> Callable[[], sessionmaker]:
     return sessionmaker(
-        autocommit=False, autoflush=True, bind=bind, expire_on_commit=False
+        autocommit=False, autoflush=True, bind=bind, expire_on_commit=True
     )