diff --git a/src/Command/ExtractCommand.php b/src/Command/ExtractCommand.php
index 7cd9f3a..f73ddfa 100644
--- a/src/Command/ExtractCommand.php
+++ b/src/Command/ExtractCommand.php
@@ -497,7 +497,7 @@ protected function filterPathSegment($path)
         return \modResource::filterPathSegment($this->modx, $path, $options);
     }
 
-    private function extractPackages(string $file = null): void
+    private function extractPackages(string|null $file = null): void
     {
         $this->output->writeln('<info>Extracting installed packages...</info>');
         $data = Gitify::loadConfig($file);