diff --git a/index.html b/index.html
index b43e836117..5618c7d4bc 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,7 @@
     </head>
     <body>
         <!--[if lte IE 9]>
-            <p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience and security.</p>
+            <p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="https://browsehappy.com/">upgrade your browser</a> to improve your experience and security.</p>
         <![endif]-->
 
         <!-- Add your site or application content here -->
