diff --git a/wp-includes/general-template.php b/wp-includes/general-template.php
index 4fda9c725b..a089fa223e 100644
--- a/wp-includes/general-template.php
+++ b/wp-includes/general-template.php
@@ -3250,7 +3250,7 @@ function wp_enqueue_code_editor( $args ) {
 		'htmlhint'   => array(
 			'tagname-lowercase'        => true,
 			'attr-lowercase'           => true,
-			'attr-value-double-quotes' => true,
+			'attr-value-double-quotes' => false,
 			'doctype-first'            => false,
 			'tag-pair'                 => true,
 			'spec-char-escape'         => true,
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8f73e195c8..bb21af9145 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-42530';
+$wp_version = '5.0-alpha-42531';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.