1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/util/preloaded.py b/lib/sqlalchemy/util/preloaded.py
index 6332b3c94..ae700b77d 100644
--- a/lib/sqlalchemy/util/preloaded.py
+++ b/lib/sqlalchemy/util/preloaded.py
@@ -35,7 +35,7 @@ if TYPE_CHECKING:
     from sqlalchemy.orm import decl_base as _orm_decl_base
     from sqlalchemy.orm import dependency as _orm_dependency
     from sqlalchemy.orm import descriptor_props as _orm_descriptor_props
-    from sqlalchemy.orm import mapper as _orm_mapper
+    from sqlalchemy.orm import mapperlib as _orm_mapper
     from sqlalchemy.orm import properties as _orm_properties
     from sqlalchemy.orm import relationships as _orm_relationships
     from sqlalchemy.orm import session as _orm_session