diff --git a/layouts/robots.txt b/layouts/robots.txt
index b08aee5..6fe9b0b 100644
--- a/layouts/robots.txt
+++ b/layouts/robots.txt
@@ -1,4 +1,4 @@
 User-agent: *
 Allow: /
 
-Sitemap: /sitemap.xml
+Sitemap: {{ relURL "sitemap.xml" }}