diff --git a/demos/dev/example.html b/demos/dev/example.html
index 4ece7efa8..cc49ddffb 100644
--- a/demos/dev/example.html
+++ b/demos/dev/example.html
@@ -39,6 +39,8 @@ graph TB
 
     <script type="module">
       import mermaid from '/mermaid.esm.mjs';
+      import layouts from '/mermaid-layout-elk.esm.mjs';
+      mermaid.registerLayoutLoaders(layouts);
       async function render(str) {
         const { svg } = await mermaid.render('dynamic', str);
         document.getElementById('dynamicDiagram').innerHTML = svg;