diff --git a/app/Models/Personnel.php b/app/Models/Personnel.php
index 84f1ed1..517f362 100644
--- a/app/Models/Personnel.php
+++ b/app/Models/Personnel.php
@@ -28,6 +28,6 @@ public static function getYear($year = null): Collection
 
     public static function getYearList(): array
     {
-        return Cache::remember('personnel-year-list', 7200, fn() => self::pluck('year')->unique()->sortDesc()->toArray());
+        return Cache::remember('personnel-year-list', 7200, fn() => self::pluck('year')->unique()->sortDesc()->values());
     }
 }