diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-admin/includes/class-wp-upgrader-skins.php
--- a/wp/wp-admin/includes/class-wp-upgrader-skins.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-admin/includes/class-wp-upgrader-skins.php	Tue Dec 15 13:49:49 2020 +0100
@@ -5,6 +5,7 @@
  * @package WordPress
  * @subpackage Upgrader
  * @since 2.8.0
+ * @deprecated 4.7.0
  */
 
 _deprecated_file( basename( __FILE__ ), '4.7.0', 'class-wp-upgrader.php' );