diff --git a/backend/requirements-min.txt b/backend/requirements-min.txt
index e2827ec659..0861477501 100644
--- a/backend/requirements-min.txt
+++ b/backend/requirements-min.txt
@@ -41,8 +41,11 @@ asgiref==3.11.0
 mcp==1.25.0
 openai
 
-langchain==0.3.27
-langchain-community==0.3.29
+langchain==1.2.0
+langchain-community==0.4.1
+langchain-classic==1.0.0
+langchain-text-splitters==1.1.0
+
 fake-useragent==2.2.0
 
 chromadb==1.3.7