diff --git a/doc/site/template.html b/doc/site/template.html
index c06c00c4..704747c6 100644
--- a/doc/site/template.html
+++ b/doc/site/template.html
@@ -4,7 +4,7 @@
 <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
 <title>{title} – Wren</title>
 <link rel="stylesheet" type="text/css" href="style.css" />
-<link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700,400italic,700italic|Source+Code+Pro:400|Lato:400|Sanchez:400italic,400' rel='stylesheet' type='text/css'>
+<link href='//fonts.googleapis.com/css?family=Source+Sans+Pro:400,700,400italic,700italic|Source+Code+Pro:400|Lato:400|Sanchez:400italic,400' rel='stylesheet' type='text/css'>
 <!-- Tell mobile browsers we're optimized for them and they don't need to crop
      the viewport. -->
 <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>