diff --git a/scaffold/tugboat/settings.tugboat.php.twig b/scaffold/tugboat/settings.tugboat.php.twig
index ca5c4e04..bb3c104a 100644
--- a/scaffold/tugboat/settings.tugboat.php.twig
+++ b/scaffold/tugboat/settings.tugboat.php.twig
@@ -8,6 +8,8 @@
  * it has been included in the main settings.php file.
  */
 
+declare(strict_types=1);
+
 if (file_exists(__DIR__ . '/settings.tugboat.php') && getenv('TUGBOAT_PREVIEW_ID')) {
   $databases['default']['default'] = [
     'database' => 'tugboat',