diff --git a/wp-includes/kses.php b/wp-includes/kses.php
index 3da5bf2624..8cc521346a 100644
--- a/wp-includes/kses.php
+++ b/wp-includes/kses.php
@@ -2119,12 +2119,17 @@ function safecss_filter_attr( $css, $deprecated = '' ) {
  */
 function _wp_add_global_attributes( $value ) {
 	$global_attributes = array(
-		'class'  => true,
-		'id'     => true,
-		'style'  => true,
-		'title'  => true,
-		'role'   => true,
-		'data-*' => true,
+		'aria-describedby' => true,
+		'aria-details'     => true,
+		'aria-label'       => true,
+		'aria-labelledby'  => true,
+		'aria-hidden'      => true,
+		'class'            => true,
+		'id'               => true,
+		'style'            => true,
+		'title'            => true,
+		'role'             => true,
+		'data-*'           => true,
 	);
 
 	if ( true === $value ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ceef9c5f2a..20f5d6d985 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-43983';
+$wp_version = '5.1-alpha-43984';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.