diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeTranslationUITest.php b/core/modules/node/lib/Drupal/node/Tests/NodeTranslationUITest.php
index 3632867..ac024bb 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeTranslationUITest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeTranslationUITest.php
@@ -25,7 +25,7 @@ class NodeTranslationUITest extends EntityTranslationUITest {
    *
    * @var array
    */
-  public static $modules = array('language', 'translation_entity', 'node', 'field_ui');
+  public static $modules = array('language', 'translation_entity', 'node', 'datetime', 'field_ui');
 
   public static function getInfo() {
     return array(
diff --git a/core/modules/system/lib/Drupal/system/Tests/Module/DependencyTest.php b/core/modules/system/lib/Drupal/system/Tests/Module/DependencyTest.php
index e561ab7..104c927 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Module/DependencyTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Module/DependencyTest.php
@@ -134,7 +134,7 @@ function testModuleEnableOrder() {
     $this->assertModules(array('module_test'), TRUE);
     state()->set('module_test.dependency', 'dependency');
     // module_test creates a dependency chain:
-    // - forum depends on taxonomy, comment, history, and ban (via module_test)
+    // - forum depends on taxonomy, comment, datetime, history, and ban (via module_test)
     // - taxonomy depends on options
     // - options depends on number
     // - ban depends on php (via module_test)
@@ -147,16 +147,17 @@ function testModuleEnableOrder() {
     $edit['modules[Core][forum][enable]'] = 'forum';
     $this->drupalPost('admin/modules', $edit, t('Save configuration'));
     $this->assertModules(array('forum'), FALSE);
-    $this->assertText(t('You must enable the History, Taxonomy, Options, Number, Comment, Ban, PHP Filter modules to install Forum.'));
+    $this->assertText(t('You must enable the History, Taxonomy, Options, Number, Comment, Datetime, Ban, PHP Filter modules to install Forum.'));
     $edit['modules[Core][history][enable]'] = 'history';
     $edit['modules[Core][options][enable]'] = 'options';
     $edit['modules[Core][number][enable]'] = 'number';
     $edit['modules[Core][taxonomy][enable]'] = 'taxonomy';
     $edit['modules[Core][comment][enable]'] = 'comment';
+    $edit['modules[Core][datetime][enable]'] = 'datetime';
     $edit['modules[Core][ban][enable]'] = 'ban';
     $edit['modules[Core][php][enable]'] = 'php';
     $this->drupalPost('admin/modules', $edit, t('Save configuration'));
-    $this->assertModules(array('forum', 'ban', 'php', 'comment', 'history', 'taxonomy', 'options', 'number'), TRUE);
+    $this->assertModules(array('forum', 'ban', 'php', 'datetime', 'comment', 'history', 'taxonomy', 'options', 'number'), TRUE);
 
     // Check the actual order which is saved by module_test_modules_enabled().
     $module_order = state()->get('system_test.module_enable_order') ?: array();