diff --git a/index.html b/index.html
index f137148..c46a0d8 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,8 @@
     <meta charset="utf-8">
     <title>Dash transaction visualizer</title>
     <link rel="stylesheet" href="style.css">
-  </head>
+    <meta http-equiv="Content-Security-Policy" content="script-src https://seigler.github.io http://insight.masternode.io:3000; connect-src http://insight.masternode.io:3000;">
+   </head>
   <body>
     <div id="connectionStatus" class="is-connecting"></div>
 
