diff --git a/core/modules/user/lib/Drupal/user/Entity/User.php b/core/modules/user/lib/Drupal/user/Entity/User.php
index 56f9907..f79842e 100644
--- a/core/modules/user/lib/Drupal/user/Entity/User.php
+++ b/core/modules/user/lib/Drupal/user/Entity/User.php
@@ -445,6 +445,13 @@ public function setUsername($username) {
   /**
    * {@inheritdoc}
    */
+  public function getChangedTime() {
+    return $this->get('changed')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     $fields['uid'] = FieldDefinition::create('integer')
       ->setLabel(t('User ID'))