diff --git a/app/Hook.php b/app/Hook.php
index e2f5699..8690865 100644
--- a/app/Hook.php
+++ b/app/Hook.php
@@ -25,7 +25,7 @@ public static function make(string $hook): Hook
     public static function all(): Collection
     {
         return collect(array_keys(Whisky::readConfig('hooks')))->map(
-            fn ($hook) => new Hook($hook),
+            fn (string $hook) => new Hook($hook),
         );
     }