diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 57be65faec2..6a546106f88 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -29,7 +29,7 @@ python-dateutil
 lark
 scikit-learn==1.5.2
 hierarchicalforecast~=0.4.0
-langchain==0.3.7
+langchain==1.3.9
 langchain-community==0.3.5
 langchain-core==0.3.35
 langchain-experimental==0.3.3