diff --git a/astro.config.mjs b/astro.config.mjs
index b81738a..1d72f5f 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -10,7 +10,19 @@ import sitemap from '@astrojs/sitemap'
 export default defineConfig({
 	site: 'https://vikunja.io',
 	output: 'hybrid',
-	integrations: [tailwind(), markdoc(), sitemap()],
+	integrations: [
+		tailwind(), 
+		markdoc(), 
+		sitemap({
+			serialize(item) {
+				if (item.url.endsWith('/')) {
+					item.url = item.url.slice(0, -1)
+				}
+
+				return item
+			},
+		}),
+	],
 	adapter: node({
 		mode: 'standalone',
 	}),