diff --git a/langgraph/pregel/io.py b/langgraph/pregel/io.py
index 3bd5c0a34..fc1fc38ea 100644
--- a/langgraph/pregel/io.py
+++ b/langgraph/pregel/io.py
@@ -4,7 +4,7 @@ from typing import Any, Iterator, Mapping, Optional, Sequence, TypeVar, Union
 from langchain_core.runnables.utils import AddableDict
 
 from langgraph.channels.base import BaseChannel, EmptyChannelError
-from langgraph.constants import TAG_HIDDEN, TASKS
+from langgraph.constants import TAG_HIDDEN
 from langgraph.pregel.log import logger
 from langgraph.pregel.types import PregelExecutableTask