diff --git a/core/modules/navigation/templates/top-bar-page-actions.html.twig b/core/modules/navigation/templates/top-bar-page-actions.html.twig
index c98e8d6a3e08715f807bcc80b7d9307f3d47e63a..2fb8edce610058e35103ecb22f0e71c13ad68e25 100644
--- a/core/modules/navigation/templates/top-bar-page-actions.html.twig
+++ b/core/modules/navigation/templates/top-bar-page-actions.html.twig
@@ -23,6 +23,7 @@
 
 {% include 'navigation:toolbar-button' with {
   icon: 'dots',
+  action: 'More actions'|t,
   attributes: create_attribute(
     {
       'aria-expanded': 'false',
diff --git a/core/modules/navigation/templates/top-bar.html.twig b/core/modules/navigation/templates/top-bar.html.twig
index b294ecfaf2062fde91a8bc5c09cd5c2ea7177278..6efdeed523f9323d9425557843b0bade2ba3139d 100644
--- a/core/modules/navigation/templates/top-bar.html.twig
+++ b/core/modules/navigation/templates/top-bar.html.twig
@@ -13,7 +13,8 @@
  */
 #}
 {% set attributes = create_attribute() %}
-<div {{ attributes.addClass('top-bar').setAttribute('data-drupal-admin-styles', '') }}>
+<aside {{ attributes.addClass('top-bar').setAttribute('data-drupal-admin-styles', '').setAttribute('aria-labelledby', 'top-bar__title') }}>
+  <h3 id="top-bar__title" class="visually-hidden">{{ 'Administrative top bar'|t }}</h3>
   <div class="top-bar__content">
     <div class="top-bar__tools">
       {{- tools -}}
@@ -25,4 +26,4 @@
       {{- actions -}}
     </div>
   </div>
-</div>
+</aside>