diff --git a/module/upgrade/lang/zh-cn.php b/module/upgrade/lang/zh-cn.php
index 3e3d0c3964..d8674595d1 100644
--- a/module/upgrade/lang/zh-cn.php
+++ b/module/upgrade/lang/zh-cn.php
@@ -50,7 +50,7 @@ $lang->upgrade->afterDeleted   = '以上文件未能删除， 删除后刷新！
 $lang->upgrade->mergeProgram   = '数据迁移';
 $lang->upgrade->mergeTips      = '数据迁移提示';
 $lang->upgrade->to20Demo       = '查看20版本Demo';
-$lang->upgrade->demoURL        = 'https://demo.qcmmi.com';
+$lang->upgrade->demoURL        = 'http://zentao20.demo.zentao.net';
 $lang->upgrade->videoURL       = 'http://zentao20.demo.zentao.net/zentao20.mp4';
 $lang->upgrade->to20Tips       = '禅道20版本升级提示';
 $lang->upgrade->to20Button     = '我已经做好备份，开始升级吧！';