diff --git a/backend/requirements.txt b/backend/requirements.txt
index 7e00b25..215c18e 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,11 +1,11 @@
 fastapi==0.109.2
 uvicorn==0.27.1
 python-dotenv==1.0.1
-langchain==0.1.9
+langchain==0.3.0.dev1
 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
+langchain-community==0.3.27
+pypdf==6.6.0
 markdown==3.5.2
 python-magic-bin==0.4.14 
\ No newline at end of file