diff --git a/_layouts/main.html b/_layouts/main.html
index 66c594a..a20d948 100644
--- a/_layouts/main.html
+++ b/_layouts/main.html
@@ -5,16 +5,16 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
   <meta name="viewport" content="width=device-width">
-  <link rel="stylesheet" href="//netdna.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css">
-  <link rel="stylesheet" href="//yui.yahooapis.com/pure/0.4.2/pure-min.css">
-  <link rel="stylesheet" href="//fonts.googleapis.com/css?family=Source+Sans+Pro:300,600,300italic">
-  <link rel="stylesheet" href="//fonts.googleapis.com/css?family=Oswald">
+  <link rel="stylesheet" href="https://netdna.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css">
+  <link rel="stylesheet" href="https://yui.yahooapis.com/pure/0.4.2/pure-min.css">
+  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,600,300italic">
+  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Oswald">
   <link rel="stylesheet" href="{{site.baseurl}}/css/syntax.css">
   <link rel="stylesheet" href="{{site.baseurl}}/css/main.css">
-  <script src="//code.jquery.com/jquery.js"></script>
-  <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
-  <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>
-  <script src="//cdn.rawgit.com/hilios/jQuery.countdown/{{site.plugin_version}}/dist/jquery.countdown.min.js"></script>
+  <script src="https://code.jquery.com/jquery.js"></script>
+  <script src="https://netdna.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>
+  <script src="https://cdn.rawgit.com/hilios/jQuery.countdown/{{site.plugin_version}}/dist/jquery.countdown.min.js"></script>
 </head>
 <body{% if page.toc %} data-spy="scroll" data-target=".toc"{% endif %}>
 <header>