diff --git a/lib/sqlalchemy/orm/scoping.py b/lib/sqlalchemy/orm/scoping.py
index 4d0a034872..bbebee5c42 100644
--- a/lib/sqlalchemy/orm/scoping.py
+++ b/lib/sqlalchemy/orm/scoping.py
@@ -43,7 +43,6 @@ if TYPE_CHECKING:
     from ._typing import OrmExecuteOptionsParameter
     from .identity import IdentityMap
     from .interfaces import ORMOption
-    from .mapper import Mapper
     from .query import Query
     from .query import RowReturningQuery
     from .session import _BindArguments
@@ -1392,7 +1391,7 @@ class scoped_session(Generic[_S]):
 
     def bulk_insert_mappings(
         self,
-        mapper: Mapper[Any],
+        mapper: _EntityBindKey[Any],
         mappings: Iterable[Dict[str, Any]],
         return_defaults: bool = False,
         render_nulls: bool = False,
@@ -1478,7 +1477,7 @@ class scoped_session(Generic[_S]):
         )
 
     def bulk_update_mappings(
-        self, mapper: Mapper[Any], mappings: Iterable[Dict[str, Any]]
+        self, mapper: _EntityBindKey[Any], mappings: Iterable[Dict[str, Any]]
     ) -> None:
         r"""Perform a bulk update of the given list of mapping dictionaries.
 
diff --git a/lib/sqlalchemy/orm/session.py b/lib/sqlalchemy/orm/session.py
index d71d295e38..eae68db6e6 100644
--- a/lib/sqlalchemy/orm/session.py
+++ b/lib/sqlalchemy/orm/session.py
@@ -4742,7 +4742,7 @@ class Session(_SessionClassMethods, EventTarget):
 
     def bulk_insert_mappings(
         self,
-        mapper: Mapper[Any],
+        mapper: _EntityBindKey[Any],
         mappings: Iterable[Dict[str, Any]],
         return_defaults: bool = False,
         render_nulls: bool = False,
@@ -4824,7 +4824,7 @@ class Session(_SessionClassMethods, EventTarget):
         )
 
     def bulk_update_mappings(
-        self, mapper: Mapper[Any], mappings: Iterable[Dict[str, Any]]
+        self, mapper: _EntityBindKey[Any], mappings: Iterable[Dict[str, Any]]
     ) -> None:
         """Perform a bulk update of the given list of mapping dictionaries.
 
@@ -4873,7 +4873,7 @@ class Session(_SessionClassMethods, EventTarget):
 
     def _bulk_save_mappings(
         self,
-        mapper: Mapper[_O],
+        mapper: _EntityBindKey[_O],
         mappings: Union[Iterable[InstanceState[_O]], Iterable[Dict[str, Any]]],
         *,
         isupdate: bool,
diff --git a/test/typing/plain_files/orm/session.py b/test/typing/plain_files/orm/session.py
index 311c522a6d..e614a39c29 100644
--- a/test/typing/plain_files/orm/session.py
+++ b/test/typing/plain_files/orm/session.py
@@ -10,6 +10,7 @@ from typing import Unpack
 from sqlalchemy import Column
 from sqlalchemy import create_engine
 from sqlalchemy import ForeignKey
+from sqlalchemy import inspect
 from sqlalchemy import Integer
 from sqlalchemy import MetaData
 from sqlalchemy import Result
@@ -120,6 +121,12 @@ with Session(e) as sess:
     with sess.begin() as tx:
         assert_type(tx, SessionTransaction)
 
+    # test #9256
+    sess.bulk_insert_mappings(User, [{"id": 1, "name": "u1"}])
+    sess.bulk_update_mappings(User, [{"id": 1, "name": "u1"}])
+    sess.bulk_insert_mappings(inspect(User), [{"id": 2, "name": "u2"}])
+    sess.bulk_update_mappings(inspect(User), [{"id": 2, "name": "u2"}])
+
 # more result tests in typed_results.py