diff --git a/core/modules/update/src/Form/UpdateManagerUpdate.php b/core/modules/update/src/Form/UpdateManagerUpdate.php
index f4d7cfb..1b6a1f1 100644
--- a/core/modules/update/src/Form/UpdateManagerUpdate.php
+++ b/core/modules/update/src/Form/UpdateManagerUpdate.php
@@ -11,6 +11,7 @@
 use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Form\FormBase;
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Render\RendererInterface;
 use Drupal\Core\State\StateInterface;
 use Drupal\Core\Url;
 use Symfony\Component\DependencyInjection\ContainerInterface;
@@ -35,16 +36,26 @@ class UpdateManagerUpdate extends FormBase {
   protected $state;
 
   /**
+   * The rendering service.
+   *
+   * @var \Drupal\Core\Render\RendererInterface
+   */
+  protected $renderer;
+
+  /**
    * Constructs a new UpdateManagerUpdate object.
    *
    * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
    *   The module handler.
    * @param \Drupal\Core\State\StateInterface $state
    *  The state service.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The rendering service.
    */
-  public function __construct(ModuleHandlerInterface $module_handler, StateInterface $state) {
+  public function __construct(ModuleHandlerInterface $module_handler, StateInterface $state, RendererInterface $renderer) {
     $this->moduleHandler = $module_handler;
     $this->state = $state;
+    $this->renderer = $renderer;
   }
 
   /**
@@ -60,7 +71,8 @@ public function getFormID() {
   public static function create(ContainerInterface $container) {
     return new static(
       $container->get('module_handler'),
-      $container->get('state')
+      $container->get('state'),
+      $container->get('renderer')
     );
   }
 
@@ -75,7 +87,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       '#last' => $this->state->get('update.last_check') ?: 0,
     );
     $form['last_check'] = array(
-      '#markup' => drupal_render($last_markup),
+      '#markup' => $this->renderer->render($last_markup),
     );
 
     if (!_update_manager_check_backends($form, 'update')) {
diff --git a/core/modules/update/update.manager.inc b/core/modules/update/update.manager.inc
index 0c7b0af..d6c7238 100644
--- a/core/modules/update/update.manager.inc
+++ b/core/modules/update/update.manager.inc
@@ -53,7 +53,7 @@ function update_manager_download_batch_finished($success, $results) {
       '#title' => t('Downloading updates failed:'),
       '#items' => $results['errors'],
     );
-    drupal_set_message(drupal_render($item_list), 'error');
+    drupal_set_message(\Drupal::service('renderer')->render($item_list), 'error');
   }
   elseif ($success) {
     drupal_set_message(t('Updates downloaded successfully.'));