diff --git a/backend/requirements.txt b/backend/requirements.txt
index 48182d4..a4ac010 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -9,7 +9,7 @@ python-multipart==0.0.9
 pydantic[email]==2.6.1
 pydantic-settings==2.1.0
 PyMuPDF==1.23.22
-litellm==1.27.8
+litellm==1.28.13
 chromadb==0.4.24
 celery[redis]==5.3.6
 redis==5.0.1