diff --git a/backend/requirements.txt b/backend/requirements.txt
index 43fbf0027..4f366123a 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -48,7 +48,7 @@ pymilvus==2.4.9
 qdrant-client~=1.12.0
 opensearch-py==2.7.1
 
-sentence-transformers==3.2.0
+sentence-transformers==3.3.1
 colbert-ai==0.2.21
 einops==0.8.0