diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 30ff316..1814f00 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml"{{with .Site.LanguageCode}} xml:lang="{{.}}" lang="{{.}}"{{end}}>
 <head>
-  <link href="//gmpg.org/xfn/11" rel="profile">
+  <link href="https://gmpg.org/xfn/11" rel="profile">
   <meta http-equiv="content-type" content="text/html; charset=utf-8">
   {{ hugo.Generator }}
 
