diff --git a/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs b/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs
index 40121901ae..7e846d09ed 100644
--- a/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs
+++ b/src/Umbraco.Web.UI.Client/web-test-runner.config.mjs
@@ -14,8 +14,10 @@ export default {
     `<html>
       <body>
         <script type="module" src="${testFramework}"></script>
-                <script type="module">
-          import 'element-internals-polyfill';
+        <script type="module">
+					import 'element-internals-polyfill';
+					import '@umbraco-ui/uui';
+					import 'router-slot';
         </script>
       </body>
     </html>`,
