diff --git a/app/rag_chain.py b/app/rag_chain.py
index 62c5e02..060843f 100644
--- a/app/rag_chain.py
+++ b/app/rag_chain.py
@@ -83,7 +83,7 @@ def build_rag_chain():
         grpc_secure=False
     )
 
-    client4 = WeaviateClient(connection_params=connection_params, auth_credentials=auth)
+    client4 = WeaviateClient(connection_params=connection_params, auth=auth)
 
     if client4.is_ready():
         print("Weaviate 4 연결 성공!")