diff --git a/tests/src/Functional/LoadTest.php b/tests/src/Functional/LoadTest.php
index 7e9691f..ff89327 100644
--- a/tests/src/Functional/LoadTest.php
+++ b/tests/src/Functional/LoadTest.php
@@ -22,7 +22,7 @@ class LoadTest extends BrowserTestBase {
    *
    * @var array
    */
-  public static $modules = ['cert'];
+  protected static $modules = ['cert'];
 
   /**
    * A user with permission to administer site configuration.
@@ -34,7 +34,7 @@ class LoadTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
     $this->user = $this->drupalCreateUser(['administer site configuration']);
     $this->drupalLogin($this->user);