diff --git a/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php b/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php
index fcd14e0bfcbffc30983b0f441e0df113faea9bd0..208095f9bc9dc40576a3470ed572d984edb6f173 100644
--- a/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php
+++ b/automatic_updates_extensions/tests/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php
@@ -28,6 +28,19 @@ abstract class AutomaticUpdatesExtensionsKernelTestBase extends AutomaticUpdates
     'automatic_updates_test_release_history',
   ];
 
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    // Disable the Composer executable validator, since it may cause the tests
+    // to fail if a supported version of Composer is unavailable to the web
+    // server. This should be okay in most situations because, apart from the
+    // validator, only Composer Stager needs run Composer, and
+    // package_manager_bypass is disabling those operations.
+    $this->disableValidators[] = 'package_manager.validator.composer_executable';
+    parent::setUp();
+  }
+
   /**
    * {@inheritdoc}
    */
diff --git a/automatic_updates_extensions/tests/src/Kernel/Validator/UpdateReleaseValidatorTest.php b/automatic_updates_extensions/tests/src/Kernel/Validator/UpdateReleaseValidatorTest.php
index ab79f254917cee647f818f0913fc98948c06a866..35706c57eee13fe445e4d4882adf602f1c923946 100644
--- a/automatic_updates_extensions/tests/src/Kernel/Validator/UpdateReleaseValidatorTest.php
+++ b/automatic_updates_extensions/tests/src/Kernel/Validator/UpdateReleaseValidatorTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\Tests\automatic_updates_extensions\Kernel\Valdiator;
+namespace Drupal\Tests\automatic_updates_extensions\Kernel\Validator;
 
 use Drupal\automatic_updates\LegacyVersionUtility;
 use Drupal\package_manager\Event\PreCreateEvent;
@@ -20,6 +20,7 @@ class UpdateReleaseValidatorTest extends AutomaticUpdatesExtensionsKernelTestBas
   protected function setUp(): void {
     $this->disableValidators[] = 'automatic_updates_extensions.validator.packages_installed_with_composer';
     parent::setUp();
+    $this->createTestProject();
   }
 
   /**
@@ -58,7 +59,7 @@ class UpdateReleaseValidatorTest extends AutomaticUpdatesExtensionsKernelTestBas
       $expected_results = [];
     }
 
-    $this->assertUpdaterResults([$project => $target_version], $expected_results, PreCreateEvent::class);
+    $this->assertUpdateResults([$project => $target_version], $expected_results, PreCreateEvent::class);
   }
 
   /**