diff --git a/src/renderer/index.html b/src/renderer/index.html
index 4f71f109..6a751812 100644
--- a/src/renderer/index.html
+++ b/src/renderer/index.html
@@ -2,7 +2,7 @@
 <html>
   <head>
     <meta charset="utf-8">
-    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; style-src 'self' 'unsafe-inline'">
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; style-src 'self' 'unsafe-inline'; media-src data:">
     <title><%= htmlWebpackPlugin.options.title %></title>
   </head>
   <body>
