diff --git a/pymilvus/orm/connections.py b/pymilvus/orm/connections.py
index 761ae2abc..490d7768c 100644
--- a/pymilvus/orm/connections.py
+++ b/pymilvus/orm/connections.py
@@ -363,6 +363,7 @@ def connect(
             "http",
             "https",
             "tcp",
+            "grpc",
         ]:
             # start and connect milvuslite
             if kwargs["uri"].endswith("/"):