diff --git a/index.html b/index.html
index dd8d2a6..2577a68 100644
--- a/index.html
+++ b/index.html
@@ -5,8 +5,8 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <meta http-equiv="X-UA-Compatible" content="ie=edge">
   <title>Alabaster Theme for Highlight.js</title>
-  <link rel="stylesheet" href="demo/index.css">
-  <link rel="stylesheet" href="theme.css">
+  <link rel="stylesheet" href="demo/index.css?v1">
+  <link rel="stylesheet" href="theme.css?v1">
 </head>
 <body>
   <h1>Alabaster Theme for Highlight.js</h1>
@@ -15,9 +15,9 @@ <h1>Alabaster Theme for Highlight.js</h1>
 
   <div id="target"></div>
 
-  <script src="demo/examples.js"></script>
-  <script src="demo/index.js"></script>
-  <script src="demo/highlight.min.js"></script>
+  <script src="demo/examples.js?v1"></script>
+  <script src="demo/index.js?v1"></script>
+  <script src="demo/highlight.min.js?v1"></script>
   <script>hljs.initHighlightingOnLoad();</script>
 </body>
 </html>
