diff --git a/web/src/locales/zh-Hans.json b/web/src/locales/zh-Hans.json
index a57219eb3..a9cda1d7f 100644
--- a/web/src/locales/zh-Hans.json
+++ b/web/src/locales/zh-Hans.json
@@ -21,6 +21,7 @@
     "archive": "归档",
     "archived": "已归档",
     "attachments": "附件",
+    "auto-expand": "自动展开",
     "avatar": "头像",
     "basic": "基础",
     "beta": "测试",