diff -u b/core/modules/update/src/Controller/UpdateController.php b/core/modules/update/src/Controller/UpdateController.php
--- b/core/modules/update/src/Controller/UpdateController.php
+++ b/core/modules/update/src/Controller/UpdateController.php
@@ -4,6 +4,7 @@
 
 use Drupal\Core\Controller\ControllerBase;
 use Drupal\Core\Render\RendererInterface;
+use Drupal\Core\Url;
 use Drupal\update\UpdateFetcherInterface;
 use Drupal\update\UpdateManagerInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
@@ -86,8 +87,7 @@
             ],
           ],
         ];
-        // @todo DI for these services, too.
-        if (\Drupal::service('module_handler')->moduleExists('dblog') && \Drupal::currentUser()->hasPermission('access site reports')) {
+        if ($this->moduleHandler()->moduleExists('dblog') && $this->currentUser()->hasPermission('access site reports')) {
           $options = ['query' => ['type' => ['update']]];
           $watchdog_url = Url::fromRoute('dblog.overview', [], $options);
           $message['items']['#items'][] = $this->t('Check <a href="@url">your local system logs</a> for additional error messages.', ['@url' => $watchdog_url->toString()]);