diff --git a/src/helpers.php b/src/helpers.php
index 930a70a..5a5c74d 100644
--- a/src/helpers.php
+++ b/src/helpers.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 if (! function_exists('uses_trait')) {
     /** Check if a class or an object uses the specified trait. */
     function uses_trait(object|string $class, string $trait): bool