diff --git a/build.js b/build.js
index 8c8b477..dfaeab2 100644
--- a/build.js
+++ b/build.js
@@ -106,6 +106,11 @@ data.languages.forEach(lang => {
 // 生成 sitemap.xml
 const sitemap = `<?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>${data.siteConfig.domain}/</loc>
+    <lastmod>${new Date().toISOString().split('T')[0]}</lastmod>
+    <priority>1.00</priority>
+  </url>
 ${data.languages.map(lang => `
   <url>
     <loc>${data.siteConfig.domain}${data.siteConfig.basePath}/${lang}/index.html</loc>