diff --git a/requirements.txt b/requirements.txt
index fa9ff6d..ff53434 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ jsonpatch==1.33
 jsonpointer==3.0.0
 jupyter_client==8.6.3
 jupyter_core==5.7.2
-langchain==0.3.2
+langchain==1.3.9
 langchain-community==0.3.1
 langchain-core==0.3.9
 langchain-openai==0.2.2