diff --git a/We.php b/We.php
index c5891ea..1202b6d 100644
--- a/We.php
+++ b/We.php
@@ -87,7 +87,7 @@ class We
      * 定义当前版本
      * @var string
      */
-    const VERSION = '1.2.26';
+    const VERSION = '1.2.27';
 
     /**
      * 静态配置
diff --git a/WePay/Refund.php b/WePay/Refund.php
index e8abbad..16e977d 100644
--- a/WePay/Refund.php
+++ b/WePay/Refund.php
@@ -63,15 +63,10 @@ class Refund extends BasicWePay
         if (!isset($data['return_code']) || $data['return_code'] !== 'SUCCESS') {
             throw new InvalidResponseException('获取退款通知XML失败！');
         }
-        if (!class_exists('Prpcrypt', false)) {
-            include dirname(__DIR__) . '/WeChat/Contracts/Prpcrypt.php';
-        }
-        $pc = new \Prpcrypt(md5($this->config->get('mch_key')));
-        $array = $pc->decrypt(base64_decode($data['req_info']));
-        if (intval($array[0]) > 0) {
-            throw new InvalidResponseException($array[1], $array[0]);
-        }
-        $data['decode'] = $array[1];
+        $key = md5($this->config->get('mch_key'));
+        $decrypt = base64_decode($data['req_info']);
+        $response = openssl_decrypt($decrypt, 'aes-256-ecb', $key, OPENSSL_RAW_DATA);
+        $data['result'] = Tools::xml2arr($response);
         return $data;
     }