diff --git a/core/lib/Drupal/Core/Datetime/Element/Datetime.php b/core/lib/Drupal/Core/Datetime/Element/Datetime.php
index d298e21..12a8968 100644
--- a/core/lib/Drupal/Core/Datetime/Element/Datetime.php
+++ b/core/lib/Drupal/Core/Datetime/Element/Datetime.php
@@ -267,6 +267,7 @@ public static function processDatetime(&$element, FormStateInterface $form_state
         '#attributes' => $element['#attributes'] + $extra_attributes,
         '#required' => $element['#required'],
         '#size' => max(12, strlen($element['#value']['date'])),
+        '#states' => $element['#states'],
       );
 
       // Allows custom callbacks to alter the element.
@@ -298,6 +299,7 @@ public static function processDatetime(&$element, FormStateInterface $form_state
         '#attributes' => $element['#attributes'] + $extra_attributes,
         '#required' => $element['#required'],
         '#size' => 12,
+        '#states' => $element['#states'],
       );
 
       // Allows custom callbacks to alter the element.