diff --git a/frontend/index.html b/frontend/index.html
index a2f16fa..2d93eab 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -3,9 +3,9 @@
         <meta name="viewport" content="width=device-width, initial-scale=1">{% for item in meta %}
         {% block item %}<meta property="{{ item[0] }}" content="{{ item[1] }}" />{% end %}{% end %}
         <script async src="{{ data["script"] }}"></script>
-        <script async src="https://cdnjs.cloudflare.com/ajax/libs/video.js/{{ data["videojs_version"] }}/video.min.js"></script>
-        <script async src="https://cdn.jsdelivr.net/npm/@silvermine/videojs-chromecast@{{ data["chromecast_version"] }}/dist/silvermine-videojs-chromecast.min.js"></script>
         <script async src="https://www.gstatic.com/cv/js/sender/v1/cast_sender.js?loadCastFramework=1"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/video.js/{{ data["videojs_version"] }}/video.min.js"></script>
+        <script defer src="https://cdn.jsdelivr.net/npm/@silvermine/videojs-chromecast@{{ data["chromecast_version"] }}/dist/silvermine-videojs-chromecast.min.js"></script>
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/video.js/{{ data["videojs_version"] }}/video-js.css">
         <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@silvermine/videojs-chromecast@{{ data["chromecast_version"] }}/dist/silvermine-videojs-chromecast.css">
         <link rel="stylesheet" href="{{ data["custom_style"] }}">