diff --git a/langgraph.json b/langgraph.json
index 31264e4..43d1eb1 100644
--- a/langgraph.json
+++ b/langgraph.json
@@ -1,4 +1,5 @@
 {
+  "$schema": "https://langgra.ph/schema.json",
   "dependencies": ["."],
   "graphs": {
     "agent": "./src/react_agent/graph.py:graph"
diff --git a/pyproject.toml b/pyproject.toml
index 6e66f7e..3fe2f50 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 license = { text = "MIT" }
 requires-python = ">=3.11,<4.0"
 dependencies = [
-    "langgraph>=0.6.0,<0.7.0",
+    "langgraph>=0.6.6,<0.7.0",
     "langchain-openai>=0.1.22",
     "langchain-anthropic>=0.1.23",
     "langchain>=0.2.14",
diff --git a/src/react_agent/tools.py b/src/react_agent/tools.py
index 7afd11b..4ce1eb6 100644
--- a/src/react_agent/tools.py
+++ b/src/react_agent/tools.py
@@ -8,7 +8,7 @@
 
 from typing import Any, Callable, List, Optional, cast
 
-from langchain_tavily import TavilySearch
+from langchain_tavily import TavilySearch  # type: ignore[import-not-found]
 from langgraph.runtime import get_runtime
 
 from react_agent.context import Context