diff --git a/src/Umbraco.Web.UI.New/umbraco/UmbracoInstall/Index.cshtml b/src/Umbraco.Web.UI.New/umbraco/UmbracoInstall/Index.cshtml
index 01b175d055..e4f1dc507a 100644
--- a/src/Umbraco.Web.UI.New/umbraco/UmbracoInstall/Index.cshtml
+++ b/src/Umbraco.Web.UI.New/umbraco/UmbracoInstall/Index.cshtml
@@ -7,6 +7,31 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Umbraco</title>
     <link rel="stylesheet" href="backoffice/style.css"/>
+    <script type="importmap">
+        {
+            "imports": {
+                "@@umbraco-cms/backoffice/backend-api": "/umbraco/backoffice/libs/backend-api.js",
+                "@@umbraco-cms/backoffice/context-api": "/umbraco/backoffice/libs/context-api.js",
+                "@@umbraco-cms/backoffice/controller": "/umbraco/backoffice/libs/controller.js",
+                "@@umbraco-cms/backoffice/element": "/umbraco/backoffice/libs/element.js",
+                "@@umbraco-cms/backoffice/entity-action": "/umbraco/backoffice/libs/entity-action.js",
+                "@@umbraco-cms/backoffice/events": "/umbraco/backoffice/libs/umb-events.js",
+                "@@umbraco-cms/backoffice/extensions-api": "/umbraco/backoffice/libs/extensions-api.js",
+                "@@umbraco-cms/backoffice/extensions-registry": "/umbraco/backoffice/libs/extensions-registry.js",
+                "@@umbraco-cms/backoffice/modal": "/umbraco/backoffice/libs/modal.js",
+                "@@umbraco-cms/backoffice/models": "/umbraco/backoffice/libs/models.js",
+                "@@umbraco-cms/backoffice/notification": "/umbraco/backoffice/libs/notification.js",
+                "@@umbraco-cms/backoffice/observable-api": "/umbraco/backoffice/libs/observable-api.js",
+                "@@umbraco-cms/backoffice/property-editor": "/umbraco/backoffice/libs/property-editor.js",
+                "@@umbraco-cms/backoffice/repository": "/umbraco/backoffice/libs/repository.js",
+                "@@umbraco-cms/backoffice/resources": "/umbraco/backoffice/libs/resources.js",
+                "@@umbraco-cms/backoffice/router": "/umbraco/backoffice/libs/router.js",
+                "@@umbraco-cms/backoffice/store": "/umbraco/backoffice/libs/store.js",
+                "@@umbraco-cms/backoffice/utils": "/umbraco/backoffice/libs/utils.js",
+                "@@umbraco-cms/backoffice/workspace": "/umbraco/backoffice/libs/workspace.js"
+            }
+        }
+    </script>
     <script type="module" src="backoffice/main.js"></script>
 </head>