diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98a8543..6fe3734 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 cos-php-sdk-v5 Upgrade Guide
 ====================
+2.6.9 to 2.6.10
+---------
+1. 安全特性
+
 2.6.8 to 2.6.9
 ---------
 1. 开通智能语音服务
diff --git a/src/Client.php b/src/Client.php
index 08fd44e..b2b392c 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -259,7 +259,7 @@
  * @see \Qcloud\Cos\Service::getService()
  */
 class Client extends GuzzleClient {
-    const VERSION = '2.6.9';
+    const VERSION = '2.6.10';
 
     public $httpClient;
 
@@ -295,7 +295,7 @@ class Client extends GuzzleClient {
         'allow_accelerate' => false,
         'timezone' => 'PRC',
         'locationWithScheme' => false,
-        'autoChange' => true,
+        'autoChange' => false,
         'limit_flag' => false,
         'isCheckRequestPath' => true,
     ];