diff --git a/libs/langgraph/langgraph/types.py b/libs/langgraph/langgraph/types.py
index 86c192c0c..26389ed37 100644
--- a/libs/langgraph/langgraph/types.py
+++ b/libs/langgraph/langgraph/types.py
@@ -1,6 +1,6 @@
-from collections import deque
 import dataclasses
 import sys
+from collections import deque
 from typing import (
     TYPE_CHECKING,
     Any,