diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 88962cdfab..2ac34edc60 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -330,7 +330,7 @@ function wp_default_scripts( &$scripts ) {
 
 	$scripts->add( 'imgareaselect', "/wp-includes/js/imgareaselect/jquery.imgareaselect$suffix.js", array('jquery'), false, 1 );
 
-	$scripts->add( 'mediaelement', "/wp-includes/js/mediaelement/mediaelement-and-player.min.js", array('jquery'), '2.17.0', 1 );
+	$scripts->add( 'mediaelement', "/wp-includes/js/mediaelement/mediaelement-and-player.min.js", array('jquery'), '2.18.1', 1 );
 	did_action( 'init' ) && $scripts->localize( 'mediaelement', 'mejsL10n', array(
 		'language' => get_bloginfo( 'language' ),
 		'strings'  => array(
@@ -744,7 +744,7 @@ function wp_default_styles( &$styles ) {
 	// External libraries and friends
 	$styles->add( 'imgareaselect',       '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.8' );
 	$styles->add( 'wp-jquery-ui-dialog', "/wp-includes/css/jquery-ui-dialog$suffix.css", array( 'dashicons' ) );
-	$styles->add( 'mediaelement',        "/wp-includes/js/mediaelement/mediaelementplayer.min.css", array(), '2.17.0' );
+	$styles->add( 'mediaelement',        "/wp-includes/js/mediaelement/mediaelementplayer.min.css", array(), '2.18.1' );
 	$styles->add( 'wp-mediaelement',     "/wp-includes/js/mediaelement/wp-mediaelement.css", array( 'mediaelement' ) );
 	$styles->add( 'thickbox',            '/wp-includes/js/thickbox/thickbox.css', array( 'dashicons' ) );