diff --git a/wp-admin/includes/update-core.php b/wp-admin/includes/update-core.php
index d3681bad14..329ec20152 100644
--- a/wp-admin/includes/update-core.php
+++ b/wp-admin/includes/update-core.php
@@ -822,6 +822,10 @@ $_old_files = array(
 	'wp-includes/block-patterns/large-header-button.php',
 	'wp-includes/blocks/subhead/block.json',
 	'wp-includes/blocks/subhead',
+	'wp-includes/css/dist/editor/editor-styles.css',
+	'wp-includes/css/dist/editor/editor-styles.min.css',
+	'wp-includes/css/dist/editor/editor-styles-rtl.css',
+	'wp-includes/css/dist/editor/editor-styles-rtl.min.css',
 );
 
 /**
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a72c0b8da9..dd1db47bd0 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51496';
+$wp_version = '5.9-alpha-51497';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.