diff --git a/packages/integrations/sitemap/src/schema.ts b/packages/integrations/sitemap/src/schema.ts
index c0133ba79aa3..ba5438452395 100644
--- a/packages/integrations/sitemap/src/schema.ts
+++ b/packages/integrations/sitemap/src/schema.ts
@@ -9,7 +9,7 @@ export const SitemapOptionsSchema = z
 		filter: z.function().args(z.string()).returns(z.boolean()).optional(),
 		customPages: z.string().url().array().optional(),
 		canonicalURL: z.string().url().optional(),
-		xslURL: z.string().url().optional(),
+		xslURL: z.string().optional(),
 
 		i18n: z
 			.object({
diff --git a/packages/integrations/sitemap/test/filter.test.js b/packages/integrations/sitemap/test/config.test.js
similarity index 61%
rename from packages/integrations/sitemap/test/filter.test.js
rename to packages/integrations/sitemap/test/config.test.js
index adecb59e6c0e..e4b7c38826e8 100644
--- a/packages/integrations/sitemap/test/filter.test.js
+++ b/packages/integrations/sitemap/test/config.test.js
@@ -3,7 +3,7 @@ import { before, describe, it } from 'node:test';
 import { sitemap } from './fixtures/static/deps.mjs';
 import { loadFixture, readXML } from './test-utils.js';
 
-describe('Filter support', () => {
+describe('Config', () => {
 	/** @type {import('./test-utils.js').Fixture} */
 	let fixture;
 
@@ -14,17 +14,26 @@ describe('Filter support', () => {
 				integrations: [
 					sitemap({
 						filter: (page) => page === 'http://example.com/one/',
+						xslURL: '/sitemap.xsl',
 					}),
 				],
 			});
 			await fixture.build();
 		});
 
-		it('Just one page is added', async () => {
+		it('filter: Just one page is added', async () => {
 			const data = await readXML(fixture.readFile('/sitemap-0.xml'));
 			const urls = data.urlset.url;
 			assert.equal(urls.length, 1);
 		});
+
+		it('xslURL: Includes xml-stylsheet', async () => {
+			const xml = await fixture.readFile('/sitemap-0.xml');
+			assert.ok(
+				xml.includes('<?xml-stylesheet type="text/xsl" href="http://example.com/sitemap.xsl"?>'),
+				xml,
+			);
+		});
 	});
 
 	describe('SSR', () => {
@@ -34,16 +43,25 @@ describe('Filter support', () => {
 				integrations: [
 					sitemap({
 						filter: (page) => page === 'http://example.com/one/',
+						xslURL: '/sitemap.xsl',
 					}),
 				],
 			});
 			await fixture.build();
 		});
 
-		it('Just one page is added', async () => {
+		it('filter: Just one page is added', async () => {
 			const data = await readXML(fixture.readFile('/client/sitemap-0.xml'));
 			const urls = data.urlset.url;
 			assert.equal(urls.length, 1);
 		});
+
+		it('xslURL: Includes xml-stylsheet', async () => {
+			const xml = await fixture.readFile('/client/sitemap-0.xml');
+			assert.ok(
+				xml.includes('<?xml-stylesheet type="text/xsl" href="http://example.com/sitemap.xsl"?>'),
+				xml,
+			);
+		});
 	});
 });
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index fde5059a066f..b5a636d468b5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -8853,7 +8853,6 @@ packages:
 
   libsql@0.4.5:
     resolution: {integrity: sha512-sorTJV6PNt94Wap27Sai5gtVLIea4Otb2LUiAUyr3p6BPOScGMKGt5F1b5X/XgkNtcsDKeX5qfeBDj+PdShclQ==}
-    cpu: [x64, arm64, wasm32]
     os: [darwin, linux, win32]
 
   lilconfig@2.1.0: