diff --git a/libs/checkpoint/langgraph/cache/base/__init__.py b/libs/checkpoint/langgraph/cache/base/__init__.py
index e98525f81..abf14b1b6 100644
--- a/libs/checkpoint/langgraph/cache/base/__init__.py
+++ b/libs/checkpoint/langgraph/cache/base/__init__.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from abc import ABC, abstractmethod
 from collections.abc import Mapping
 from typing import Generic, Sequence, TypeVar
diff --git a/libs/checkpoint/langgraph/cache/file/__init__.py b/libs/checkpoint/langgraph/cache/file/__init__.py
index cb6765f0e..f37322ae2 100644
--- a/libs/checkpoint/langgraph/cache/file/__init__.py
+++ b/libs/checkpoint/langgraph/cache/file/__init__.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import asyncio
 import datetime
 import dbm