diff --git a/content/index.erb b/content/index.erb
index f3d059e..860cf3e 100644
--- a/content/index.erb
+++ b/content/index.erb
@@ -15,7 +15,7 @@
       </div>
       <div class="tile is-parent is-4">
         <div class="tile is-child box highlighted">
-          <img src="http://thecatapi.com/api/images/get?format=src&type=gif">
+          <img src="//thecatapi.com/api/images/get?format=src&type=gif">
         </div>
       </div>
       <div class="tile is-vertical is-2">