diff --git a/wp-includes/class-wp-customize-widgets.php b/wp-includes/class-wp-customize-widgets.php
index 98a63b4112..8edcd6f1c9 100644
--- a/wp-includes/class-wp-customize-widgets.php
+++ b/wp-includes/class-wp-customize-widgets.php
@@ -420,6 +420,7 @@ final class WP_Customize_Widgets {
 				'priority'                 => 110,
 				'active_callback'          => array( $this, 'is_panel_active' ),
 				'auto_expand_sole_section' => true,
+				'theme_supports'           => 'widgets',
 			)
 		);
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 42a998a396..dcc7fc90fa 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-alpha-52621';
+$wp_version = '6.0-alpha-52622';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.