Adam Bramley
--- a/src/Normalizer/DynamicEntityReferenceItemNormalizer.php
+++ b/src/Normalizer/DynamicEntityReferenceItemNormalizer.php
 namespace Drupal\dynamic_entity_reference\Normalizer;

 use Drupal\dynamic_entity_reference\Plugin\Field\FieldType\DynamicEntityReferenceItem;
-use Drupal\hal\Normalizer\EntityReferenceItemNormalizer;
+use Drupal\serialization\Normalizer\EntityReferenceItemNormalizer;