diff --git a/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemap.test.ts b/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemap.test.ts
index 8bece909f3..0e88a757bc 100644
--- a/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemap.test.ts
+++ b/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemap.test.ts
@@ -6,12 +6,14 @@
  */
 
 import {fromPartial} from '@total-typescript/shoehorn';
+import {DEFAULT_VCS_CONFIG} from '@docusaurus/utils';
 import createSitemap from '../createSitemap';
 import type {PluginOptions} from '../options';
 import type {DocusaurusConfig, RouteConfig} from '@docusaurus/types';
 
 const siteConfig: DocusaurusConfig = fromPartial({
   url: 'https://example.com',
+  future: {experimental_vcs: DEFAULT_VCS_CONFIG},
 });
 
 const options: PluginOptions = {
diff --git a/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemapItem.test.ts b/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemapItem.test.ts
index 4aa4df3a8f..d3663a7d53 100644
--- a/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemapItem.test.ts
+++ b/packages/docusaurus-plugin-sitemap/src/__tests__/createSitemapItem.test.ts
@@ -6,6 +6,7 @@
  */
 
 import {fromPartial} from '@total-typescript/shoehorn';
+import {DEFAULT_VCS_CONFIG} from '@docusaurus/utils';
 import {createSitemapItem} from '../createSitemapItem';
 import {DEFAULT_OPTIONS} from '../options';
 import type {PluginOptions} from '../options';
@@ -13,6 +14,7 @@ import type {DocusaurusConfig, RouteConfig} from '@docusaurus/types';
 
 const siteConfig: DocusaurusConfig = fromPartial({
   url: 'https://example.com',
+  future: {experimental_vcs: DEFAULT_VCS_CONFIG},
 });
 
 function test(params: {
diff --git a/packages/docusaurus-plugin-sitemap/src/createSitemapItem.ts b/packages/docusaurus-plugin-sitemap/src/createSitemapItem.ts
index ebd6bba44c..c79994a48f 100644
--- a/packages/docusaurus-plugin-sitemap/src/createSitemapItem.ts
+++ b/packages/docusaurus-plugin-sitemap/src/createSitemapItem.ts
@@ -6,13 +6,14 @@
  */
 
 import {applyTrailingSlash} from '@docusaurus/utils-common';
-import {getLastUpdate, normalizeUrl} from '@docusaurus/utils';
+import {normalizeUrl} from '@docusaurus/utils';
 import type {LastModOption, SitemapItem} from './types';
-import type {DocusaurusConfig, RouteConfig} from '@docusaurus/types';
+import type {DocusaurusConfig, RouteConfig, VcsConfig} from '@docusaurus/types';
 import type {PluginOptions} from './options';
 
 async function getRouteLastUpdatedAt(
   route: RouteConfig,
+  vcs: Pick<VcsConfig, 'getFileLastUpdateInfo'>,
 ): Promise<number | null | undefined> {
   // Important to bail-out early here
   // This can lead to duplicated getLastUpdate() calls and performance problems
@@ -24,8 +25,10 @@ async function getRouteLastUpdatedAt(
     return route.metadata?.lastUpdatedAt;
   }
   if (route.metadata?.sourceFilePath) {
-    const lastUpdate = await getLastUpdate(route.metadata?.sourceFilePath);
-    return lastUpdate?.lastUpdatedAt ?? null;
+    const lastUpdateInfo = await vcs.getFileLastUpdateInfo(
+      route.metadata?.sourceFilePath,
+    );
+    return lastUpdateInfo?.timestamp ?? null;
   }
 
   return undefined;
@@ -46,14 +49,16 @@ function formatLastmod(timestamp: number, lastmodOption: LastModOption) {
 async function getRouteLastmod({
   route,
   lastmod,
+  vcs,
 }: {
   route: RouteConfig;
   lastmod: LastModOption | null;
+  vcs: Pick<VcsConfig, 'getFileLastUpdateInfo'>;
 }): Promise<string | null> {
   if (lastmod === null) {
     return null;
   }
-  const lastUpdatedAt = (await getRouteLastUpdatedAt(route)) ?? null;
+  const lastUpdatedAt = (await getRouteLastUpdatedAt(route, vcs)) ?? null;
   return lastUpdatedAt ? formatLastmod(lastUpdatedAt, lastmod) : null;
 }
 
@@ -77,6 +82,10 @@ export async function createSitemapItem({
     ]),
     changefreq,
     priority,
-    lastmod: await getRouteLastmod({route, lastmod}),
+    lastmod: await getRouteLastmod({
+      route,
+      lastmod,
+      vcs: siteConfig.future.experimental_vcs,
+    }),
   };
 }