diff --git a/backend/requirements.txt b/backend/requirements.txt
index fe2afdc..ecec951 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -17,7 +17,6 @@ numpy==1.26.3
 
 # Aliyun SDK
 aliyun-python-sdk-core==2.14.0
-aliyun-python-sdk-oss==2.18.5
 oss2==2.18.5
 
 # Utilities