diff --git a/app/rag_chain.py b/app/rag_chain.py
index dfa7b16..62c5e02 100644
--- a/app/rag_chain.py
+++ b/app/rag_chain.py
@@ -80,11 +80,10 @@ def build_rag_chain():
         http_secure=False,
         grpc_host="183.111.96.67",
         grpc_port=32619,  # 예시 포트, 실제 grpc 포트 넣어야 함
-        grpc_secure=False,
-        auth_credentials=auth  # 없으면 생략 가능
+        grpc_secure=False
     )
 
-    client4 = WeaviateClient(connection_params=connection_params)
+    client4 = WeaviateClient(connection_params=connection_params, auth_credentials=auth)
 
     if client4.is_ready():
         print("Weaviate 4 연결 성공!")