diff --git a/sitemap.xml b/sitemap.xml
index 75700a6..01cc42d 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<urlset>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 <url><loc>https://purplebored.pl/</loc><priority>1.0</priority></url>
 <url><loc>https://purplebored.pl/pages/mirrors.xhtml</loc><priority>1.0</priority></url>
 <url><loc>https://purplebored.pl/pages/host.xhtml</loc><priority>1.0</priority></url>