diff --git a/src/Form/ConfigPatchGitlabApiProjectBranchForm.php b/src/Form/ConfigPatchGitlabApiProjectBranchForm.php
index 0b810535e1e70f73590d50c74c3e9d418a3f89b9..9ea789f6b611a127e28b513edbc00d253c26a2bb 100644
--- a/src/Form/ConfigPatchGitlabApiProjectBranchForm.php
+++ b/src/Form/ConfigPatchGitlabApiProjectBranchForm.php
@@ -30,17 +30,22 @@ class ConfigPatchGitlabApiProjectBranchForm extends FormBase {
   /**
    * @var \Drupal\config_patch_gitlab_api\Gitlab\ConfigPatchGitlabClientFactory
    */
-  protected $configPatchGitlabClientFactory;
+  protected ConfigPatchGitlabClientFactory $configPatchGitlabClientFactory;
+
+  /**
+   * @var \Drupal\Core\Routing\UrlGeneratorInterface
+   */
+  protected UrlGeneratorInterface $urlGenerator;
 
   /**
    * @var \Drupal\Core\State\StateInterface
    */
-  protected $state;
+  protected StateInterface $state;
 
   /**
    * @var \Drupal\Core\Cache\CacheBackendInterface
    */
-  protected $cache;
+  protected CacheBackendInterface $cache;
 
   /**
    * ConfigPatchGitlabApiProjectBranchForm constructor.