diff --git a/lib/Command/ExportScripts.php b/lib/Command/ExportScripts.php
index 9f01671..44d54a5 100644
--- a/lib/Command/ExportScripts.php
+++ b/lib/Command/ExportScripts.php
@@ -27,7 +27,7 @@ protected function configure(): void {
 		parent::configure();
 	}
 
-	protected function execute(InputInterface $input, OutputInterface $output)  {
+	protected function execute(InputInterface $input, OutputInterface $output): int  {
 		$scriptId = $input->getOption('id');
 		$scriptId = $scriptId ? intval($scriptId) : null;
 		if ($scriptId !== null) {
diff --git a/lib/Command/ImportScripts.php b/lib/Command/ImportScripts.php
index fc51842..8fff42a 100644
--- a/lib/Command/ImportScripts.php
+++ b/lib/Command/ImportScripts.php
@@ -28,7 +28,7 @@ protected function configure(): void {
 		parent::configure();
 	}
 
-	protected function execute(InputInterface $input, OutputInterface $output)  {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$json = file_get_contents("php://stdin");
 		if (false === $json) {
 			$output->writeln('<error>You need an interactive terminal to run this command</error>');
diff --git a/lib/Command/ListScripts.php b/lib/Command/ListScripts.php
index 0ecf782..c73ce3d 100644
--- a/lib/Command/ListScripts.php
+++ b/lib/Command/ListScripts.php
@@ -21,7 +21,7 @@ protected function configure(): void {
 		parent::configure();
 	}
 
-	protected function execute(InputInterface $input, OutputInterface $output)  {
+	protected function execute(InputInterface $input, OutputInterface $output): int  {
 		$output->writeln('<info>Listing file actions:</info>');
 		$scripts = $this->scriptMapper->findAll();
 
diff --git a/lib/Command/RunScript.php b/lib/Command/RunScript.php
index 5876833..02ab4c8 100644
--- a/lib/Command/RunScript.php
+++ b/lib/Command/RunScript.php
@@ -44,12 +44,12 @@ protected function configure(): void {
 		parent::configure();
 	}
 
-	protected function execute(InputInterface $input, OutputInterface $output)  {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$scriptId = $input->getArgument('id');
 		$userId = $input->getOption('user');
 		$scriptInputsJson = $input->getOption('inputs') ?? '{}';
 		$fileInputs = $input->getOption('file') ?? [];
-		
+
 		try {
 			$scriptInputsData = json_decode($scriptInputsJson, true, 512, JSON_THROW_ON_ERROR);
 		} catch (\JsonException $err) {
@@ -77,7 +77,7 @@ protected function execute(InputInterface $input, OutputInterface $output)  {
 					if (ctype_digit(strval($fileInput))) {
 						$nodes = $rootFolder->getById(intval($fileInput));
 						if (!isset($nodes[0])) {
-							$output->writeln('<error>Could not find input file ' . $fileInput . ' belonging in root folder ' . $rootFolder->getPath() . ' for file action</error>');			
+							$output->writeln('<error>Could not find input file ' . $fileInput . ' belonging in root folder ' . $rootFolder->getPath() . ' for file action</error>');
 							return 1;
 						}
 						$file = $nodes[0];