diff --git a/2.1.x/index.html b/2.1.x/index.html
index 3d3d6b7f..7daadd68 100644
--- a/2.1.x/index.html
+++ b/2.1.x/index.html
@@ -32,7 +32,7 @@
 	color: #ffffff;
 }
 </style>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/zepto/1.2.0/zepto.min.js"></script>
+<script src="http://cdnjs.cloudflare.com/ajax/libs/zepto/1.2.0/zepto.min.js"></script>
 <script type="text/javascript">
 function addBlockSwitches() {
 	$('.primary').each(function() {