diff --git a/backend/requirements.txt b/backend/requirements.txt
index 7e00b25..0f25b53 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,9 +1,9 @@
 fastapi==0.109.2
 uvicorn==0.27.1
 python-dotenv==1.0.1
-langchain==0.1.9
+langchain==0.2.5
 pydantic==2.6.1
-python-multipart==0.0.9
+python-multipart==0.0.18
 chromadb==0.4.22
 langchain-community==0.0.27
 pypdf==4.0.1