diff --git a/tests/utils.py b/tests/utils.py
index 8fee50708438..5bfdf703390e 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -157,7 +157,7 @@ class RemoteOpenAIServer:
             self.host = None
             self.port = None
         else:
-            self.host = str(args.host or "localhost")
+            self.host = str(args.host or "127.0.0.1")
             self.port = int(args.port)
 
         self.show_hidden_metrics = args.show_hidden_metrics_for_version is not None