diff --git a/wp-includes/post.php b/wp-includes/post.php
index 8c3f55d271..9946462a0b 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -365,6 +365,7 @@ function create_initial_post_types() {
 				'filter_items_list'     => __( 'Filter templates list' ),
 				'items_list_navigation' => __( 'Templates list navigation' ),
 				'items_list'            => __( 'Templates list' ),
+				'item_updated'          => __( 'Template updated.' ),
 			),
 			'description'                     => __( 'Templates to include in your theme.' ),
 			'public'                          => false,
@@ -429,6 +430,7 @@ function create_initial_post_types() {
 				'filter_items_list'     => __( 'Filter template parts list' ),
 				'items_list_navigation' => __( 'Template parts list navigation' ),
 				'items_list'            => __( 'Template parts list' ),
+				'item_updated'          => __( 'Template part updated.' ),
 			),
 			'description'                     => __( 'Template parts to include in your templates.' ),
 			'public'                          => false,
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ea18d7b02f..67f65e056c 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58054';
+$wp_version = '6.6-alpha-58055';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.