diff --git a/packages/integrations/sitemap/src/index.ts b/packages/integrations/sitemap/src/index.ts
index 70441cb8e..01759eaef 100644
--- a/packages/integrations/sitemap/src/index.ts
+++ b/packages/integrations/sitemap/src/index.ts
@@ -17,6 +17,16 @@ type SitemapOptions =
 			 */
 			filter?(page: string): string;
 
+			/**
+			 * If you have any URL, not rendered by Astro, that you want to include in your sitemap,
+			 * this config option will help you to include your array of custom pages in your sitemap.
+			 *
+			 * ```js
+			 * customPages: ['http://example.com/custom-page', 'http://example.com/custom-page2']
+			 * ```
+			 */
+			customPages?: Array<string>;
+
 			/**
 			 * If present, we use the `site` config option as the base for all sitemap URLs
 			 * Use `canonicalURL` to override this
@@ -40,6 +50,7 @@ function generateSitemap(pages: string[]) {
 
 export default function createPlugin({
 	filter,
+	customPages,
 	canonicalURL,
 }: SitemapOptions = {}): AstroIntegration {
 	let config: AstroConfig;
@@ -61,6 +72,9 @@ export default function createPlugin({
 				if (filter) {
 					pageUrls = pageUrls.filter((page: string) => filter(page));
 				}
+				if (customPages) {
+					pageUrls = [...pageUrls, ...customPages];
+				}
 				const sitemapContent = generateSitemap(pageUrls);
 				fs.writeFileSync(new URL('sitemap.xml', dir), sitemapContent);
 			},