diff --git a/src/pages/robots.txt.ts b/src/pages/robots.txt.ts
index c46edb8..a7102c1 100644
--- a/src/pages/robots.txt.ts
+++ b/src/pages/robots.txt.ts
@@ -21,6 +21,6 @@ Sitemap: ${sitemapURL.href}
 `
 
 export const GET: APIRoute = ({ site }) => {
-  const sitemapURL = new URL('sitemap-index.xml', site)
+  const sitemapURL = new URL('sitemap.xml', site)
   return new Response(getRobotsTxt(sitemapURL))
 }