diff --git a/src/Umbraco.Web.UI.Client/src/external/rxjs/index.ts b/src/Umbraco.Web.UI.Client/src/external/rxjs/index.ts
index abc0543f3c..f7d17284b7 100644
--- a/src/Umbraco.Web.UI.Client/src/external/rxjs/index.ts
+++ b/src/Umbraco.Web.UI.Client/src/external/rxjs/index.ts
@@ -16,4 +16,5 @@ export {
 	firstValueFrom,
 	switchMap,
 	filter,
+	startWith,
 } from 'rxjs';