diff --git a/src/Annotation/Union.php b/src/Annotation/Union.php
index 13c84f0dd..7af0ef6f0 100644
--- a/src/Annotation/Union.php
+++ b/src/Annotation/Union.php
@@ -22,8 +22,6 @@ final class Union implements Annotation
     /**
      * Union types.
      *
-     * @Required
-     *
      * @var array<string>
      */
     public array $types;