diff --git a/src/Consumer.php b/src/Consumer.php
index 5b0a699..54787e8 100644
--- a/src/Consumer.php
+++ b/src/Consumer.php
@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 namespace Nsq;
 
-class Consumer extends Connection
+final class Consumer extends Connection
 {
     private int $rdy = 0;