diff --git a/demo/index.html b/demo/index.html
index 74d4492..c8e35fd 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -8,7 +8,7 @@
 </head>
 
 <body>
-  <script src='https://unpkg.com/vue@2.2.6'></script>
+  <script src="https://unpkg.com/vue@2.2.6/dist/vue.js"></script>
   <script src="../dist/vue-count-to.min.js"></script>
   <a href="https://github.com/PanJiaChen/vue-countTo" class="github-corner" aria-label="View source on Github">
     <svg width="80" height="80" viewBox="0 0 250 250" style="fill:#4AB7BD; color:#fff; position: absolute; top: 0; border: 0; right: 0;"
