diff --git a/src/Adr/src/Input.php b/src/Adr/src/Input.php
index <HASH>..<HASH> 100644
--- a/src/Adr/src/Input.php
+++ b/src/Adr/src/Input.php
@@ -10,7 +10,7 @@ use Venta\Contracts\Adr\Input as InputContract;
  *
  * @package Venta\Adr
  */
-class Input implements InputContract
+final class Input implements InputContract
 {
     /**
      * @inheritDoc
Adr Input class marked final.