diff --git a/src/script.js b/src/script.js
index e66f5b3..11b5af6 100644
--- a/src/script.js
+++ b/src/script.js
@@ -258,6 +258,7 @@ globalConsoleContainerEl
 		utils.log('onExternalLibChange');
 		updateExternalLibUi();
 		scope.setPreviewContent(true);
+		alertsService.add('Libraries updated.');
 	}
 
 	function updateExternalLibUi() {