diff --git a/src/Driver.php b/src/Driver.php
index f06d35c..074c089 100644
--- a/src/Driver.php
+++ b/src/Driver.php
@@ -26,7 +26,7 @@
 /**
  * @api
  */
-class Driver implements DriverInterface
+final class Driver implements DriverInterface
 {
     /**
      * @var Closure():PDO