diff --git a/libs/langchain_v1/langchain/agents/middleware/types.py b/libs/langchain_v1/langchain/agents/middleware/types.py
index a1ccb5ae26c..e0785adebe3 100644
--- a/libs/langchain_v1/langchain/agents/middleware/types.py
+++ b/libs/langchain_v1/langchain/agents/middleware/types.py
@@ -30,7 +30,7 @@ from langchain_core.messages import (
     SystemMessage,
     ToolMessage,
 )
-from langgraph.channels.delta import DeltaChannel
+from langgraph.channels._delta import DeltaChannel
 from langgraph.channels.ephemeral_value import EphemeralValue
 from langgraph.graph.message import add_messages
 from langgraph.prebuilt.tool_node import ToolCallRequest, ToolCallWrapper