diff --git a/requirements.txt b/requirements.txt
index 51483c0..193f8c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ jsonpatch==1.33
 jsonpointer==3.0.0
 jupyter_client==8.8.0
 jupyter_core==5.9.1
-langchain==1.2.3
+langchain==1.3.9
 langchain-core==1.2.7
 langchain-huggingface==1.2.0
 langchain-ollama==1.0.1