diff --git a/public/index.html b/public/index.html
index abf988037..1c5583dcd 100644
--- a/public/index.html
+++ b/public/index.html
@@ -8,6 +8,7 @@
 
     <meta name="theme-color" content="#282c37" />
     <meta content='/getting-started' name='initialPath' />
+    <meta http-equiv="Content-Security-Policy" content="script-src 'self'">
 
     <link rel='preload' as='script' href='/packs/js/locales/glitch/en-json.js' />
     <link rel='preload' as='script' href='/packs/js/flavours/glitch/async/getting_started.js' />