diff --git a/Site/2013-05/index.html b/Site/2013-05/index.html
index 0f696a46..972d0948 100644
--- a/Site/2013-05/index.html
+++ b/Site/2013-05/index.html
@@ -14,7 +14,7 @@
         <link rel="shortcut icon" href="img/favicon.png" type="image/x-png" />
         <link rel="stylesheet" href="css/bootstrap.min.css">
         <link rel="stylesheet" href="css/bootstrap-responsive.min.css">
-        <link rel="stylesheet" href="css/main.css?2">
+        <link rel="stylesheet" href="css/main.css?3">
 
         <script src="js/vendor/modernizr-2.6.2.min.js"></script>
         <script src="js/vendor/prefixfree.min.js"></script>