diff --git a/php/src/Auth/AuthManager.php b/php/src/Auth/AuthManager.php
index f3775146400..200942cbbf0 100644
--- a/php/src/Auth/AuthManager.php
+++ b/php/src/Auth/AuthManager.php
@@ -6,11 +6,11 @@
 use AIO\Data\DataConst;
 use DateTime;
 
-class AuthManager {
+readonly class AuthManager {
     private const string SESSION_KEY = 'aio_authenticated';
 
     public function __construct(
-        private readonly ConfigurationManager $configurationManager
+        private ConfigurationManager $configurationManager
     ) {
     }
 
diff --git a/php/src/Auth/PasswordGenerator.php b/php/src/Auth/PasswordGenerator.php
index 726a58709ee..57df7d43306 100644
--- a/php/src/Auth/PasswordGenerator.php
+++ b/php/src/Auth/PasswordGenerator.php
@@ -4,7 +4,7 @@
 
 use Random\RandomException;
 
-class PasswordGenerator {
+readonly class PasswordGenerator {
 
     private const array WORDS = [
         'abacus',