diff --git a/sitemapindex.xml b/sitemapindex.xml
index 4eb8009f..8b10d39d 100644
--- a/sitemapindex.xml
+++ b/sitemapindex.xml
@@ -2,12 +2,15 @@
 <sitemapindex xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd"
 xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <sitemap>
+    <loc>https://www.mdanalysis.org/sitemap.xml</loc>
+  </sitemap>
   <sitemap>
     <loc>https://docs.mdanalysis.org/1.0.0/sitemap.xml</loc>
-  </sitemap>  
+  </sitemap>
   <sitemap>
     <loc>https://userguide.mdanalysis.org/1.0.0/sitemap.xml</loc>
-  </sitemap>  
+  </sitemap>
   <sitemap>
     <loc>https://www.mdanalysis.org/pmda/sitemap.xml</loc>
   </sitemap>