From 5a22337d142a1e80c4d207e4d5ced83ec830821e Mon Sep 17 00:00:00 2001
From: "open-swe[bot]" <open-swe@users.noreply.github.com>
Date: Tue, 29 Jul 2025 17:26:45 +0000
Subject: [PATCH] Apply patch

---
 libs/langgraph/langgraph/_internal/_runnable.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/langgraph/langgraph/_internal/_runnable.py b/libs/langgraph/langgraph/_internal/_runnable.py
index efa0dc825..c6c5ed239 100644
--- a/libs/langgraph/langgraph/_internal/_runnable.py
+++ b/libs/langgraph/langgraph/_internal/_runnable.py
@@ -61,6 +61,11 @@ try:
 except ImportError:
     _StreamingCallbackHandler = None  # type: ignore
 
+try:
+    from langgraph.pregel.protocol import PregelProtocol
+except ImportError:
+    PregelProtocol = None  # type: ignore
+
 
 def _set_config_context(
     config: RunnableConfig, run: Any = None
@@ -896,3 +901,4 @@ async def _consume_aiter(it: AsyncIterator[Any]) -> Any:
         else:
             output = chunk
     return output
+