diff --git a/_layouts/default.html b/_layouts/default.html
index e30c364..87b3b7d 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -10,7 +10,7 @@
     <!--[if lt IE 9]>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv.min.js"></script>
     <![endif]-->
-  <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha256-4+XzXVhsDmqanXGHaHvgh1gMQKX40OUvDEBTu8JcmNs=" crossorigin="anonymous"></script>
+  <script src="https://code.jquery.com/jquery-3.4.1.js"></script>
   </head>
   <body>
     <div class="wrapper" style="width:100% !important;">
