diff --git a/core/lib/Drupal/Core/Render/Element/StatusMessages.php b/core/lib/Drupal/Core/Render/Element/StatusMessages.php
index 8b8e52b..857538f 100644
--- a/core/lib/Drupal/Core/Render/Element/StatusMessages.php
+++ b/core/lib/Drupal/Core/Render/Element/StatusMessages.php
@@ -37,6 +37,9 @@ public function getInfo() {
       '#pre_render' => [
         get_class() . '::generatePlaceholder',
       ],
+      '#attached' => [
+        'library' => ['core/drupal.message'],
+      ],
     ];
   }