diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index f6564ad342..0cb6d9f3b1 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -1007,6 +1007,7 @@ function wp_default_scripts( $scripts ) {
 	did_action( 'init' ) && $scripts->localize( 'swfupload-handlers', 'swfuploadL10n', $uploader_l10n );
 
 	$scripts->add( 'comment-reply', "/wp-includes/js/comment-reply$suffix.js", array(), false, 1 );
+	did_action( 'init' ) && $scripts->add_data( 'comment-reply', 'strategy', 'async' );
 
 	$scripts->add( 'json2', "/wp-includes/js/json2$suffix.js", array(), '2015-05-03' );
 	did_action( 'init' ) && $scripts->add_data( 'json2', 'conditional', 'lt IE 8' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a4b99a742e..5092156624 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56321';
+$wp_version = '6.4-alpha-56323';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.