diff --git a/requirements.txt b/requirements.txt
index 465f78c..c8b434e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 langchain>=1.2.10
+langgraph>=0.2.0
 langchain-chroma
 langchain-tavily
 langchain-ollama