diff --git a/test/test.browser.ts b/test/test.browser.ts
index 58e433a..15aae12 100644
--- a/test/test.browser.ts
+++ b/test/test.browser.ts
@@ -1,5 +1,5 @@
 import { expect, tap } from '@pushrocks/tapbundle';
-import * as deesElement from '../ts/index';
+import * as deesElement from '../ts/index.js';
 
 tap.test('should create a static element', async () => {
   @deesElement.customElement('my-button')