diff --git a/Command/UserPasswordHashCommand.php b/Command/UserPasswordHashCommand.php
index 5fdc89c..d3c80b9 100644
--- a/Command/UserPasswordHashCommand.php
+++ b/Command/UserPasswordHashCommand.php
@@ -49,7 +49,7 @@ public function __construct(PasswordHasherFactoryInterface $hasherFactory, array
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->addArgument('password', InputArgument::OPTIONAL, 'The plain password to hash.')