diff --git a/python/sglang/bench_serving.py b/python/sglang/bench_serving.py
index cfacdc15f..3f515a1e9 100644
--- a/python/sglang/bench_serving.py
+++ b/python/sglang/bench_serving.py
@@ -1763,7 +1763,9 @@ async def benchmark(
         pbar.close()
 
     if "sglang" in backend:
-        server_info = requests.get(base_url + "/get_server_info")
+        server_info = requests.get(
+            base_url + "/get_server_info", headers=get_auth_headers()
+        )
         if server_info.status_code == 200:
             server_info_json = server_info.json()
             if "decode" in server_info_json: