diff --git a/astro.config.mjs b/astro.config.mjs
index f691913..6d0bf8f 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -5,6 +5,6 @@ import sitemap from '@astrojs/sitemap';
 
 // https://astro.build/config
 export default defineConfig({
-	site: 'https://KTaisei.com',
+	site: 'https://KTaisei.com/official',
 	integrations: [mdx(), sitemap()],
 });