diff --git a/youtube/templates/base.html b/youtube/templates/base.html
index 3dda55d..fae7d13 100644
--- a/youtube/templates/base.html
+++ b/youtube/templates/base.html
@@ -3,6 +3,7 @@
     <head>
         <meta charset="utf-8">
         <title>{{ page_title }}</title>
+        <meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline'; script-src 'none'; media-src https://*.googlevideo.com">
         <link href="/youtube.com/static/shared.css" type="text/css" rel="stylesheet">
         <link href="/youtube.com/static/comments.css" type="text/css" rel="stylesheet">
         <link href="/youtube.com/static/favicon.ico" type="image/x-icon" rel="icon">
