diff --git a/src/wp-includes/class-wp-theme.php b/src/wp-includes/class-wp-theme.php
index 29657df228..36e62b1a7c 100644
--- a/src/wp-includes/class-wp-theme.php
+++ b/src/wp-includes/class-wp-theme.php
@@ -54,6 +54,7 @@ final class WP_Theme implements ArrayAccess {
 	 * @since 5.0.0 Added the Twenty Nineteen theme.
 	 * @since 5.3.0 Added the Twenty Twenty theme.
 	 * @since 5.6.0 Added the Twenty Twenty-One theme.
+	 * @since 5.9.0 Added the Twenty Twenty-Two theme.
 	 * @var string[]
 	 */
 	private static $default_themes = array(