diff -u b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/ContactCategoryTest.php b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/ContactCategoryTest.php
--- b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/ContactCategoryTest.php
+++ b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/ContactCategoryTest.php
@@ -15,6 +15,11 @@
   /**
    * {@inheritdoc}
    */
+  public static $modules = ['contact', 'migrate_drupal'];
+
+  /**
+   * {@inheritdoc}
+   */
   public function providerSource() {
     $tests = [
       [
diff -u b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/d6/ContactSettingsTest.php b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/d6/ContactSettingsTest.php
--- b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/d6/ContactSettingsTest.php
+++ b/core/modules/contact/tests/src/Kernel/Plugin/migrate/source/d6/ContactSettingsTest.php
@@ -15,6 +15,11 @@
   /**
    * {@inheritdoc}
    */
+  public static $modules = ['contact', 'migrate_drupal'];
+
+  /**
+   * {@inheritdoc}
+   */
   public function providerSource() {
     $tests = [];