--- a/test/index.html	Thu Jul 05 09:22:51 2018 +0800
+++ b/test/index.html	Thu Jul 05 09:23:39 2018 +0800
@@ -5,7 +5,7 @@
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/qunit/1.23.1/qunit.min.css" integrity="sha384-oQ1Z/Orq/L9w9EhO5QmTbu08PPIpDmbuHzaQeJPi0/0REO+hcrCg0to09HshNisn" crossorigin="anonymous" media="screen">
     <script src="https://cdnjs.cloudflare.com/ajax/libs/qunit/1.23.1/qunit.min.js" integrity="sha384-GftoZqKj7IL1JYbeqfPVDY+qy54u6Cz9prgZaJ8PvwVv+oL7SDndzI1wJcxinJOq" crossorigin="anonymous"></script>
 
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js" integrity="sha384-FZY+KSLVXVyc1qAlqH9oCx1JEOlQh6iXfw3o2n3Iy32qGjXmUPWT9I0Z9e9wxYe3" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js" integrity="sha384-5DWzr9S4agqS3WKvPrhFKJagpYyHOBsf3/DxuDKORyqCv2sYer9c/ExdhPOL8CGh" crossorigin="anonymous"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js" integrity="sha384-NNt9ocJfZhIg2c5PbM5G2a3tTaeXhEfqCHWHNB7htzaWKn8MwFkzVyGdzLA8QMX7" crossorigin="anonymous"></script>
 
     <script src="../backbone.shard.js"></script>