diff --git a/language/zh_CN/admin.lang.php b/language/zh_CN/admin.lang.php
index 887363d83..0f0001059 100644
--- a/language/zh_CN/admin.lang.php
+++ b/language/zh_CN/admin.lang.php
@@ -1433,4 +1433,7 @@ $lang['Standard pages'] = '标准页面';
 $lang['Standard pages aren\'t activated, however you have %d active themes that will still use them. These themes are:'] = '标准页面尚未启用，但你目前有 %d 个已激活的主题仍会调用该功能。涉及的主题如下：';
 $lang['Standard pages header'] = '标准页面头部';
 $lang['Use Piwigo logo'] = '使用 Piwigo 标识';
-$lang['Use custom logo (png, jpeg or svg)'] = '使用自定义标识（支持 PNG、JPEG、SVG 格式）';
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+$lang['Use custom logo (png, jpeg or svg)'] = '使用自定义标识（支持 PNG、JPEG、SVG 格式）';
+$lang['Follow the update guide'] = '参考更新指南';
+$lang['Two container updates are available'] = '有2项容器更新待处理';
+$lang['You are about to delete %s groups, are you sure?'] = '你即将删除%s个分组，确定要执行此操作吗？';
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