diff --git a/extend/pay/AlinPay.php b/extend/pay/AlinPay.php
index f7dd384..6eb3cb5 100644
--- a/extend/pay/AlinPay.php
+++ b/extend/pay/AlinPay.php
@@ -64,8 +64,8 @@ class AlinPay
         $config = json_decode($config, true);
         $this->config = $config;
 
-        // 域名从配置读取，回退默认值
-        $this->domain = $config['domain'] ?? 'https://alinintermon-api.fantianchuangshi.com';
+        // 域名从配置读取，回退默认值（2026-05 第三方网关由 fantianchuangshi.com 迁至 hypayment.net）
+        $this->domain = $config['domain'] ?? 'https://alinintermon-api.hypayment.net';
     }
 
     /**