diff --git a/demos/pie.html b/demos/pie.html
index 3d832d83c..031d14a85 100644
--- a/demos/pie.html
+++ b/demos/pie.html
@@ -38,7 +38,7 @@
     </pre>
 
     <script type="module">
-      import mermaid from '../packages/mermaid/src/mermaid';
+      import mermaid from './mermaid.esm.mjs';
       mermaid.initialize({
         theme: 'forest',
         // themeCSS: '.node rect { fill: red; }',