diff --git a/wp-includes/class-wp-term-query.php b/wp-includes/class-wp-term-query.php
index 74386bc9ab..2f3da47301 100644
--- a/wp-includes/class-wp-term-query.php
+++ b/wp-includes/class-wp-term-query.php
@@ -104,7 +104,7 @@ class WP_Term_Query {
 	 *     @type int|array    $object_ids             Optional. Object ID, or array of object IDs. Results will be
 	 *                                                limited to terms associated with these objects.
 	 *     @type string       $orderby                Field(s) to order terms by. Accepts term fields ('name',
-	 *                                                'slug', 'term_group', 'term_id', 'id', 'description'),
+	 *                                                'slug', 'term_group', 'term_id', 'id', 'description', 'parent'),
 	 *                                                'count' for term taxonomy count, 'include' to match the
 	 *                                                'order' of the $include param, 'meta_value', 'meta_value_num',
 	 *                                                the value of `$meta_key`, the array keys of `$meta_query`, or
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 662d613366..fc9e0df476 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-40899';
+$wp_version = '4.9-alpha-40900';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.