diff --git a/sqlalchemy-stubs/orm/session.pyi b/sqlalchemy-stubs/orm/session.pyi
index b0c588c..d542dd7 100644
--- a/sqlalchemy-stubs/orm/session.pyi
+++ b/sqlalchemy-stubs/orm/session.pyi
@@ -104,7 +104,7 @@ class sessionmaker(_SessionClassMethods):
     class_: Any = ...
     def __init__(self, bind: Optional[Any] = ..., class_: Any = ..., autoflush: bool = ...,
                  autocommit: bool = ..., expire_on_commit: bool = ...,
-                 info: Optional[Any] = ..., **kw) -> None: ...
+                 info: Optional[Any] = ..., **kw) -> Session: ...
     def __call__(self, **local_kw): ...
     def configure(self, **new_kw): ...