diff --git a/astro.config.mjs b/astro.config.mjs
index 08cc964..43599e3 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -5,7 +5,7 @@ import sitemap from '@astrojs/sitemap';
 
 // https://astro.build/config
 export default defineConfig({
-	site: 'https://KTaisei.github.io/official',
+	site: 'https://ktaisei.github.io/official',
 	integrations: [mdx(), sitemap()],
 	base: '/official',
 });