diff --git a/adventures/03-the-ai-observatory/expert/requirements.txt b/adventures/03-the-ai-observatory/expert/requirements.txt
index 2373771..7a51a23 100644
--- a/adventures/03-the-ai-observatory/expert/requirements.txt
+++ b/adventures/03-the-ai-observatory/expert/requirements.txt
@@ -1,4 +1,4 @@
-langchain==1.2.10
+langchain==1.3.9
 langchain-community==0.4.1
 langchain-qdrant==1.1.0
 qdrant-client==1.16.2