diff --git a/casbin_sqlalchemy_adapter/adapter.py b/casbin_sqlalchemy_adapter/adapter.py
index 9260ce9..8ffca5a 100644
--- a/casbin_sqlalchemy_adapter/adapter.py
+++ b/casbin_sqlalchemy_adapter/adapter.py
@@ -50,6 +50,7 @@ def load_policy(self, model):
         lines = self._session.query(CasbinRule).all()
         for line in lines:
             persist.load_policy_line(str(line), model)
+        self._commit()
 
     def _save_policy_line(self, ptype, rule):
         line = CasbinRule(ptype=ptype)