diff --git a/index.html b/index.html
index 44af041ea..a188f236a 100644
--- a/index.html
+++ b/index.html
@@ -60,11 +60,11 @@ <h2 class="tagline">A modern, HTML5-ready alternative to CSS resets</h2>
           <a href="https://tweetdeck.twitter.com/">TweetDeck</a>,
           <a href="https://github.com/">GitHub</a>,
           <a href="https://soundcloud.com/">Soundcloud</a>,
-          <a href="http://www.theguardian.com/uk?view=mobile">Guardian</a>,
+          <a href="https://www.theguardian.com/uk">Guardian</a>,
           <a href="https://medium.com/">Medium</a>,
           <a href="https://www.gov.uk/">GOV.UK</a>,
-          <a href="http://getbootstrap.com/">Bootstrap</a>,
-          <a href="http://html5boilerplate.com/">HTML5 Boilerplate</a>,
+          <a href="https://getbootstrap.com/">Bootstrap</a>,
+          <a href="https://html5boilerplate.com/">HTML5 Boilerplate</a>,
           and many others.
         </p>