diff --git a/_config.yml b/_config.yml
index fbb519b..7d29621 100644
--- a/_config.yml
+++ b/_config.yml
@@ -26,7 +26,7 @@ description: >- # used by seo meta and the atom feed
   Peter Tanner | Electronic and software engineer.
 
 # fill in the protocol & hostname for your site, e.g., 'https://username.github.io'
-url: "https://petertanner.dev"
+url: "https://www.petertanner.dev"
 
 github:
   username: peter-tanner # change to your github username
diff --git a/sitemap_index.xml b/sitemap_index.xml
index d00f93b..fc75c57 100644
--- a/sitemap_index.xml
+++ b/sitemap_index.xml
@@ -9,4 +9,7 @@
    <sitemap>
       <loc>https://www.petertanner.dev/code/sitemap.xml</loc>
    </sitemap>
+   <sitemap>
+      <loc>https://www.petertanner.dev/neptunium/sitemap.xml</loc>
+   </sitemap>
 </sitemapindex>
\ No newline at end of file