diff --git a/compose/mpp/demo/src/jsMain/resources/index.html b/compose/mpp/demo/src/jsMain/resources/index.html
index d42e35fe407a2..fbb833704186e 100644
--- a/compose/mpp/demo/src/jsMain/resources/index.html
+++ b/compose/mpp/demo/src/jsMain/resources/index.html
@@ -22,7 +22,7 @@
     <title>Compose JS Demo</title>
     <link type="text/css" rel="stylesheet" href="styles.css">
     <script src="skiko.js"> </script>
-    <script src="demo.js"> </script>
+    <script async defer src="demo.js"> </script>
 </head>
 
 <body>
diff --git a/compose/mpp/demo/src/wasmJsMain/resources/index.html b/compose/mpp/demo/src/wasmJsMain/resources/index.html
index 61d5c9c8939e1..03710a08efdc0 100644
--- a/compose/mpp/demo/src/wasmJsMain/resources/index.html
+++ b/compose/mpp/demo/src/wasmJsMain/resources/index.html
@@ -21,7 +21,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Compose Wasm Demo</title>
     <link type="text/css" rel="stylesheet" href="styles.css">
-    <script src="demo.js"> </script>
+    <script async defer src="demo.js"> </script>
 </head>
 
 <body>
