diff --git a/wp-admin/includes/update-core.php b/wp-admin/includes/update-core.php
index b54a19ed33..badd5832a1 100644
--- a/wp-admin/includes/update-core.php
+++ b/wp-admin/includes/update-core.php
@@ -706,6 +706,7 @@ $_old_files = array(
 // 4.6
 'wp-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628.
 // 4.8
+'wp-includes/js/tinymce/plugins/wpembed',
 'wp-includes/js/tinymce/plugins/media/moxieplayer.swf',
 'wp-includes/js/tinymce/skins/lightgray/fonts/readme.md',
 'wp-includes/js/tinymce/skins/lightgray/fonts/tinymce-small.json',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b8fc6f01b0..7266f9e910 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-RC2-40878';
+$wp_version = '4.8-RC2-40880';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.