diff --git a/requirements/base.txt b/requirements/base.txt
index 58b59cb3a..e42e02fc7 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -92,7 +92,7 @@ html2text==2024.2.26
 openpyxl==3.1.3
 
 # LLM exvaluation
-langchain==0.2.6
+langchain==0.2.9
 langchain-community==0.2.6
 #langchain[llms]==0.1.5
 openai==1.35.14