diff --git a/src/DTOs/OptimizeResult.php b/src/DTOs/OptimizeResult.php
index 3efa9a0..c8f47d3 100644
--- a/src/DTOs/OptimizeResult.php
+++ b/src/DTOs/OptimizeResult.php
@@ -3,7 +3,7 @@
 namespace Mostafaznv\PdfOptimizer\DTOs;
 
 
-class OptimizeResult
+readonly class OptimizeResult
 {
     public function __construct(
         public bool    $status,
diff --git a/src/DTOs/PdfOptimizerJobData.php b/src/DTOs/PdfOptimizerJobData.php
index 0d7c8aa..706ae21 100644
--- a/src/DTOs/PdfOptimizerJobData.php
+++ b/src/DTOs/PdfOptimizerJobData.php
@@ -2,23 +2,23 @@
 
 namespace Mostafaznv\PdfOptimizer\DTOs;
 
-
 use Illuminate\Support\Str;
 use Mostafaznv\PdfOptimizer\Laravel\Concerns\Disk;
 use Mostafaznv\PdfOptimizer\Laravel\Concerns\File;
 use Psr\Log\LoggerInterface;
 
-class PdfOptimizerJobData
+
+readonly class PdfOptimizerJobData
 {
     public function __construct(
-        public readonly string           $id,
-        public readonly array            $commands,
-        public readonly string           $input,
-        public readonly string           $output,
-        public readonly ?File            $file = null,
-        public readonly ?Disk            $disk = null,
-        public readonly ?LoggerInterface $logger = null,
-        public readonly int              $timeout = 900
+        public string           $id,
+        public array            $commands,
+        public string           $input,
+        public string           $output,
+        public ?File            $file = null,
+        public ?Disk            $disk = null,
+        public ?LoggerInterface $logger = null,
+        public int              $timeout = 900
     ) {}
 
     public static function make(array $commands, string $input, string $output, File $file, ?Disk $disk = null, ?LoggerInterface $logger = null, int $timeout = 900): self
diff --git a/src/DTOs/QueueData.php b/src/DTOs/QueueData.php
index 9b1a86e..bfad1cb 100644
--- a/src/DTOs/QueueData.php
+++ b/src/DTOs/QueueData.php
@@ -3,7 +3,7 @@
 namespace Mostafaznv\PdfOptimizer\DTOs;
 
 
-class QueueData
+readonly class QueueData
 {
     public function __construct(
         public bool    $enabled = false,