diff --git a/rattail/db/__init__.py b/rattail/db/__init__.py
index 2da5ef16..d0057b63 100644
--- a/rattail/db/__init__.py
+++ b/rattail/db/__init__.py
@@ -87,7 +87,8 @@ if sqlalchemy:
             self.continuum_user = user
 
 
-    Session = orm.sessionmaker(class_=SessionBase, rattail_config=None, rattail_record_changes=False)
+    Session = orm.sessionmaker(class_=SessionBase, rattail_config=None, rattail_record_changes=False, expire_on_commit=False)
+
 
 else: # no sqlalchemy
     Session = None