diff --git a/wp-includes/class-wp-admin-bar.php b/wp-includes/class-wp-admin-bar.php
index 190fc030d0..ee3d6d1baa 100644
--- a/wp-includes/class-wp-admin-bar.php
+++ b/wp-includes/class-wp-admin-bar.php
@@ -575,7 +575,7 @@ class WP_Admin_Bar {
 			$menuclass = ' class="' . esc_attr( trim( $menuclass ) ) . '"';
 		}
 
-		echo "<li id='" . esc_attr( 'wp-admin-bar-' . $node->id ) . "'$menuclass>";
+		echo "<li role='group' id='" . esc_attr( 'wp-admin-bar-' . $node->id ) . "'$menuclass>";
 
 		if ( $has_link ) {
 			$attributes = array( 'onclick', 'target', 'title', 'rel', 'lang', 'dir' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index cbf661fdf0..ab0ed08917 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-beta2-58437';
+$wp_version = '6.6-beta2-58438';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.