diff --git a/libs/prebuilt/langgraph/prebuilt/tool_node.py b/libs/prebuilt/langgraph/prebuilt/tool_node.py
index 5282ac519..e501ad644 100644
--- a/libs/prebuilt/langgraph/prebuilt/tool_node.py
+++ b/libs/prebuilt/langgraph/prebuilt/tool_node.py
@@ -1232,7 +1232,7 @@ def _wrap_tool_with_reserved_keywords(
 
             # If no reserved args to filter, return original
             if not reserved_args:
-                return original_schema
+                return original_schema  # type: ignore[no-any-return]
 
             # Create a new schema class dynamically
             from pydantic import create_model
@@ -1406,3 +1406,4 @@ def _get_runtime_arg(tool: BaseTool) -> Optional[str]:
     reserved_args = _get_reserved_keyword_args(tool)
     return "runtime" if "runtime" in reserved_args else None
 
+