diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index 9df70abaf4..a2fd54cf31 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -286,6 +286,7 @@ function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
 		'title'           => 'title',
 		'category'        => 'category',
 		'parent'          => 'parent',
+		'ancestor'        => 'ancestor',
 		'icon'            => 'icon',
 		'description'     => 'description',
 		'keywords'        => 'keywords',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f89ba0c6a5..9402535d0a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-alpha-53717';
+$wp_version = '6.1-alpha-53718';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.