diff --git a/layouts/index.html b/layouts/index.html
index 405eaa2092..ad11faa2e0 100644
--- a/layouts/index.html
+++ b/layouts/index.html
@@ -11,7 +11,7 @@
 <section id="kubeweekly">
       <main>
         <!-- Begin MailChimp Signup Form -->
-        <link href="//cdn-images.mailchimp.com/embedcode/horizontal-slim-10_7.css" rel="stylesheet" type="text/css">
+        <link href="https://cdn-images.mailchimp.com/embedcode/horizontal-slim-10_7.css" rel="stylesheet" type="text/css">
         <style type="text/css">
         	#mc_embed_signup{clear:left; width:100%;}
         	/* Add your own MailChimp form style overrides in your site stylesheet or in this style block.