diff --git a/src/EventSubscriber/CheckRequirementsSubscriber.php b/src/EventSubscriber/CheckRequirementsSubscriber.php
index cdeed0275..b8f728cec 100644
--- a/src/EventSubscriber/CheckRequirementsSubscriber.php
+++ b/src/EventSubscriber/CheckRequirementsSubscriber.php
@@ -29,10 +29,10 @@
  *
  * @author Javier Eguiluz <javier.eguiluz@gmail.com>
  */
-final class CheckRequirementsSubscriber implements EventSubscriberInterface
+final readonly class CheckRequirementsSubscriber implements EventSubscriberInterface
 {
     public function __construct(
-        private readonly EntityManagerInterface $entityManager
+        private EntityManagerInterface $entityManager
     ) {
     }
 
diff --git a/src/EventSubscriber/CommentNotificationSubscriber.php b/src/EventSubscriber/CommentNotificationSubscriber.php
index 842abff42..b71327b45 100644
--- a/src/EventSubscriber/CommentNotificationSubscriber.php
+++ b/src/EventSubscriber/CommentNotificationSubscriber.php
@@ -26,14 +26,14 @@
  *
  * @author Oleg Voronkovich <oleg-voronkovich@yandex.ru>
  */
-final class CommentNotificationSubscriber implements EventSubscriberInterface
+final readonly class CommentNotificationSubscriber implements EventSubscriberInterface
 {
     public function __construct(
-        private readonly MailerInterface $mailer,
-        private readonly UrlGeneratorInterface $urlGenerator,
-        private readonly TranslatorInterface $translator,
+        private MailerInterface $mailer,
+        private UrlGeneratorInterface $urlGenerator,
+        private TranslatorInterface $translator,
         #[Autowire('%app.notifications.email_sender%')]
-        private readonly string $sender
+        private string $sender
     ) {
     }
 
diff --git a/src/EventSubscriber/ControllerSubscriber.php b/src/EventSubscriber/ControllerSubscriber.php
index 5fc857410..e85d62a3c 100644
--- a/src/EventSubscriber/ControllerSubscriber.php
+++ b/src/EventSubscriber/ControllerSubscriber.php
@@ -23,10 +23,10 @@
  * @author Ryan Weaver <weaverryan@gmail.com>
  * @author Javier Eguiluz <javier.eguiluz@gmail.com>
  */
-final class ControllerSubscriber implements EventSubscriberInterface
+final readonly class ControllerSubscriber implements EventSubscriberInterface
 {
     public function __construct(
-        private readonly SourceCodeExtension $twigExtension
+        private SourceCodeExtension $twigExtension
     ) {
     }
 
diff --git a/src/Form/DataTransformer/TagArrayToStringTransformer.php b/src/Form/DataTransformer/TagArrayToStringTransformer.php
index b98be0a5c..0358ac054 100644
--- a/src/Form/DataTransformer/TagArrayToStringTransformer.php
+++ b/src/Form/DataTransformer/TagArrayToStringTransformer.php
@@ -27,10 +27,10 @@
  *
  * @template-implements DataTransformerInterface<Tag[], string>
  */
-final class TagArrayToStringTransformer implements DataTransformerInterface
+final readonly class TagArrayToStringTransformer implements DataTransformerInterface
 {
     public function __construct(
-        private readonly TagRepository $tags
+        private TagRepository $tags
     ) {
     }
 
diff --git a/src/Twig/AppExtension.php b/src/Twig/AppExtension.php
index e6c44439e..6f4cefd4e 100644
--- a/src/Twig/AppExtension.php
+++ b/src/Twig/AppExtension.php
@@ -33,7 +33,7 @@ final class AppExtension extends AbstractExtension
     // See https://symfony.com/doc/current/service_container.html#binding-arguments-by-name-or-type
     public function __construct(
         /** @var string[] */
-        private array $enabledLocales,
+        private readonly array $enabledLocales,
     ) {
     }
 
diff --git a/src/Twig/SourceCodeExtension.php b/src/Twig/SourceCodeExtension.php
index c0248209b..182cf9966 100644
--- a/src/Twig/SourceCodeExtension.php
+++ b/src/Twig/SourceCodeExtension.php
@@ -36,7 +36,7 @@ final class SourceCodeExtension extends AbstractExtension
     private $controller;
 
     public function __construct(
-        private FileLinkFormatter $fileLinkFormat,
+        private readonly FileLinkFormatter $fileLinkFormat,
         #[Autowire('%kernel.project_dir%')]
         private string $projectDir,
     ) {