diff --git a/app/controller/api/Auth.php b/app/controller/api/Auth.php
index 4003940b..01560b84 100644
--- a/app/controller/api/Auth.php
+++ b/app/controller/api/Auth.php
@@ -1552,7 +1552,7 @@ class Auth extends BaseController
             $ios = (Db::name('AppUpdate')->where('type', 2)->where('phone_brand', '')->order('id', 'desc')->find()) ?? (object)[];
             return app('json')->success(compact('android', 'ios'));
         } else {
-            $agent = strtolower($_SERVER['HTTP_USER_AGENT']);
+            $agent = strtolower($this->request->server('HTTP_USER_AGENT'));
             // 检查是否为iOS设备，包括iPhone和iPad
             if (strpos($agent, 'iphone') !== false || strpos($agent, 'ipad') !== false) {
                 $appInfo=[];