diff --git a/src/components/Head.astro b/src/components/Head.astro
index e91937a..ab13591 100644
--- a/src/components/Head.astro
+++ b/src/components/Head.astro
@@ -23,6 +23,7 @@ const { title, description, image = '/static/twitter-card.png' } = Astro.props
 <meta name="generator" content={Astro.generator} />
 
 <link rel="canonical" href={canonicalURL} />
+<link rel="sitemap" href="/sitemap-index.xml" />
 
 <title>{title}</title>
 <meta name="title" content={title} />
diff --git a/src/pages/robots.txt.ts b/src/pages/robots.txt.ts
new file mode 100644
index 0000000..679a44d
--- /dev/null
+++ b/src/pages/robots.txt.ts
@@ -0,0 +1,13 @@
+import type { APIRoute } from 'astro'
+
+const getRobotsTxt = (sitemapURL: URL) => `
+User-agent: *
+Allow: /
+
+Sitemap: ${sitemapURL.href}
+`
+
+export const GET: APIRoute = ({ site }) => {
+  const sitemapURL = new URL('sitemap-index.xml', site)
+  return new Response(getRobotsTxt(sitemapURL))
+}