diff -u b/tests/src/Kernel/Serializer/SerializerTest.php b/tests/src/Kernel/Serializer/SerializerTest.php
--- b/tests/src/Kernel/Serializer/SerializerTest.php
+++ b/tests/src/Kernel/Serializer/SerializerTest.php
@@ -3,7 +3,6 @@
 namespace Drupal\Tests\jsonapi\Kernel\Serializer;
 
 use Drupal\Core\Render\Markup;
-use Drupal\jsonapi\Normalizer\Value\CacheableNormalization;
 use Drupal\jsonapi_test_data_type\TraversableObject;
 use Drupal\node\Entity\Node;
 use Drupal\node\Entity\NodeType;