diff --git a/chat-assistant/requirements.txt b/chat-assistant/requirements.txt
index 329f886d7..13b8150c4 100644
--- a/chat-assistant/requirements.txt
+++ b/chat-assistant/requirements.txt
@@ -1,4 +1,4 @@
-langchain==0.1.11
+langchain==1.3.9
 openai
 faiss-cpu
 unstructured