diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 59fd428..14f214a 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -642,18 +642,9 @@ function locale_library_info_alter(&$libraries, $module) {
     // this attach behavior will execute early. JS_LIBRARY is the default for
     // hook_library_info_alter(), thus does not have to be specified explicitly.
     $libraries['jquery.ui.datepicker']['dependencies'][] = array('locale', 'drupal.locale.datepicker');
-    $libraries['jquery.ui.datepicker']['js'][] = array(
-      'data' => array(
-        'jquery' => array(
-          'ui' => array(
-            'datepicker' => array(
-              'isRTL' => $language_interface->direction == Language::DIRECTION_RTL,
-              'firstDay' => \Drupal::config('system.date')->get('first_day'),
-            ),
-          ),
-        ),
-      ),
-      'type' => 'setting',
+    $libraries['jquery.ui.datepicker']['settings']['jquery']['ui']['datepicker'] = array(
+      'isRTL' => $language_interface->direction == Language::DIRECTION_RTL,
+      'firstDay' => \Drupal::config('system.date')->get('first_day'),
     );
   }
 }