diff --git a/src/NewCommand.php b/src/NewCommand.php
index 1e902d8..0903804 100644
--- a/src/NewCommand.php
+++ b/src/NewCommand.php
@@ -133,7 +133,7 @@ protected function interact(InputInterface $input, OutputInterface $output)
      * @param  \Symfony\Component\Console\Output\OutputInterface  $output
      * @return int
      */
-    protected function execute(InputInterface $input, OutputInterface $output): void
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $this->validateStackOption($input);