diff --git a/docusaurus.config.js b/docusaurus.config.js
index 18b90e6221..70b8b014a3 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -87,6 +87,7 @@ export default async function createAsyncConfig() {
             sidebarPath: false,
           },
           sitemap: {
+            lastmod: 'date',
             ignorePatterns: ['/calico/[0-9]*.[0-9]*/**', '/calico-enterprise/[0-9]*.[0-9]*/**'],
           },
           googleTagManager: {