diff --git a/index.html b/index.html
index e525e37ad5878a117f1e41b7483b44a213cdb838..ba2082b737879d0c3f98cb9a81906cb67862611f 100644
--- a/index.html
+++ b/index.html
@@ -66,8 +66,8 @@
<!--
Custom JS -->
- <script defer src="js/appCesium.js"></script>
- <script defer src="js/appChart.js"></script>
+ <script defer type="module" src="js/appCesium.js"></script>
+ <script defer type="module" src="js/appChart.js"></script>
</head>
<body class="sb-nav-fixed">
<nav class="sb-topnav navbar navbar-expand navbar-dark bg-dark">