diff --git a/wp-includes/kses.php b/wp-includes/kses.php
index 300376197a..6bc1d005ba 100644
--- a/wp-includes/kses.php
+++ b/wp-includes/kses.php
@@ -1452,9 +1452,9 @@ function wp_kses_hair_parse( $attr ) {
 	// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
 	$regex =
 		'(?:'
-		.     '[_a-zA-Z][-_a-zA-Z0-9:.]*'   // Attribute name.
+		.     '[_a-zA-Z][-_a-zA-Z0-9:.]*' // Attribute name.
 		. '|'
-		.     '\[\[?[^\[\]]+\]\]?' // Shortcode in the name position implies unfiltered_html.
+		.     '\[\[?[^\[\]]+\]\]?'        // Shortcode in the name position implies unfiltered_html.
 		. ')'
 		. '(?:'               // Attribute value.
 		.     '\s*=\s*'       // All values begin with '='.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b1aee74f1e..ec38e6d628 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-48138';
+$wp_version = '5.5-alpha-48139';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.