diff --git a/backend/requirements.txt b/backend/requirements.txt
index 217a711ab..0a717b8f2 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -35,8 +35,8 @@ anthropic
 google-generativeai==0.7.2
 tiktoken
 
-langchain==0.3.0
-langchain-community==0.2.12
+langchain==0.3.5
+langchain-community==0.3.3
 langchain-chroma==0.1.4
 
 fake-useragent==1.5.1