diff --git a/src/ComposerScripts.php b/src/ComposerScripts.php
index 7d21e5e..67060bc 100644
--- a/src/ComposerScripts.php
+++ b/src/ComposerScripts.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types = 1);
 
 namespace LanguageServer;