diff --git a/docs/index.html b/docs/index.html
index a1d51985b..40d2a3470 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -139,6 +139,7 @@
             '/': 'Search',
           },
           pathNamespaces: ['/zh-cn'],
+          depth: 6,
         },
         skipLink: {
           '/zh-cn/': '跳到主要内容',