diff --git a/app/application/app/Services/Translate/Completed/Project/DocumentationCategoryContentService.php b/app/application/app/Services/Translate/Completed/Project/DocumentationCategoryContentService.php
index d521ae6..a2004c1 100644
--- a/app/application/app/Services/Translate/Completed/Project/DocumentationCategoryContentService.php
+++ b/app/application/app/Services/Translate/Completed/Project/DocumentationCategoryContentService.php
@@ -13,7 +13,7 @@ use App\Services\ProjectTranslationServiceHash\CompletionChecker;
 use Illuminate\Support\Facades\DB;
 use KorElf\TranslateLaravel\Contracts\TranslationCompletedListener;
 
-final class DocumentationCategoryContentService implements TranslationCompletedListener
+final readonly class DocumentationCategoryContentService implements TranslationCompletedListener
 {
     public function __construct(
         private DocumentationCategoryRepository $categoryRepository,