diff --git a/.env.example b/.env.example
index 39e87c1e..0e585556 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,4 @@
 PUBLIC_DEV="true"
+PUBLIC_BASE_URL="http://localhost:5173"
 PUBLIC_GTM_ID=""
 PUBLIC_GTAG_ID=""
diff --git a/src/content/docs/environments.md b/src/content/docs/environments.md
index 53756fad..92a1fcfd 100644
--- a/src/content/docs/environments.md
+++ b/src/content/docs/environments.md
@@ -1,5 +1,5 @@
 ---
-title: 'environments'
+title: "environments"
 description: "Configure ESLint and TypeScript for Lapikit's custom <kit:*> syntax. Fix false positives, suppress ts(6133) warnings, and set up your editor for the best DX."
 ---
 
diff --git a/src/routes/sitemap.xml/+server.ts b/src/routes/sitemap.xml/+server.ts
index c9d7f2e5..0e1aa4ec 100644
--- a/src/routes/sitemap.xml/+server.ts
+++ b/src/routes/sitemap.xml/+server.ts
@@ -1,4 +1,5 @@
 import { docsPaths } from '$lib';
+import { PUBLIC_BASE_URL } from '$env/static/public';
 
 export const prerender = true;
 
@@ -14,8 +15,8 @@ function toUrl(path: string) {
 	return route || '/';
 }
 
-export async function GET({ request }) {
-	const baseUrl = new URL(request.url).origin;
+export async function GET() {
+	const baseUrl = PUBLIC_BASE_URL.replace(/\/$/, '');
 
 	const routes = [...Object.keys(pageModules), ...Object.keys(markdownModules)]
 		.map(toUrl)