diff --git a/README.md b/README.md
index 52e759c..67a9ef8 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ from towhee import ops
 
 p = (
         towhee.pipe.input('collection_name', 'vec')
-        .map(('collection_name', 'vec'), (), ops.ann_insert.milvus_client(host='127.0.0.1', port='19530'))
+        .map(('collection_name', 'vec'), (), ops.ann_insert.osschat_milvus(host='127.0.0.1', port='19530'))
         .output()
         )