diff --git a/Classes/Command/NotifySearchEngineCommand.php b/Classes/Command/NotifySearchEngineCommand.php
index 9d3564d..9c71802 100644
--- a/Classes/Command/NotifySearchEngineCommand.php
+++ b/Classes/Command/NotifySearchEngineCommand.php
@@ -32,9 +32,9 @@ class NotifySearchEngineCommand extends Command
      * Will be called by DI, so please don't add extbase classes with inject methods here.
      */
     public function __construct(
-        readonly protected SearchEngineNotifier $searchEngineNotifier,
-        readonly protected StackRepository $stackRepository,
-        readonly protected LoggerInterface $logger,
+        protected SearchEngineNotifier $searchEngineNotifier,
+        protected StackRepository $stackRepository,
+        protected LoggerInterface $logger,
     ) {
         parent::__construct();
     }
diff --git a/Classes/Domain/Repository/StackRepository.php b/Classes/Domain/Repository/StackRepository.php
index 7c41a38..f73228c 100644
--- a/Classes/Domain/Repository/StackRepository.php
+++ b/Classes/Domain/Repository/StackRepository.php
@@ -16,7 +16,7 @@
 /**
  * Repository to collect records from table "tx_indexnow_stack"
  */
-readonly class StackRepository
+class StackRepository
 {
     private const TABLE_NAME = 'tx_indexnow_stack';
 
diff --git a/Classes/EventListener/RespectPagesWithNoIndexEventListener.php b/Classes/EventListener/RespectPagesWithNoIndexEventListener.php
index c1dd790..15936a5 100644
--- a/Classes/EventListener/RespectPagesWithNoIndexEventListener.php
+++ b/Classes/EventListener/RespectPagesWithNoIndexEventListener.php
@@ -16,7 +16,7 @@
 /**
  * Prevent informing IndexNow about pages with activated no_index property.
  */
-readonly class RespectPagesWithNoIndexEventListener
+class RespectPagesWithNoIndexEventListener
 {
     public function __invoke(ModifyPageUidEvent $modifyPageUidEvent): void
     {
diff --git a/Classes/Hook/DataHandlerHook.php b/Classes/Hook/DataHandlerHook.php
index 8d2731c..0f60dcc 100644
--- a/Classes/Hook/DataHandlerHook.php
+++ b/Classes/Hook/DataHandlerHook.php
@@ -32,7 +32,7 @@
 /**
  * Hook into DataHandler to submit a re-index request to indexnow.org
  */
-readonly class DataHandlerHook
+class DataHandlerHook
 {
     public function __construct(
         protected ExtConf $extConf,
diff --git a/Classes/Notifier/SearchEngineNotifier.php b/Classes/Notifier/SearchEngineNotifier.php
index 0d608bf..fc568a3 100644
--- a/Classes/Notifier/SearchEngineNotifier.php
+++ b/Classes/Notifier/SearchEngineNotifier.php
@@ -19,7 +19,7 @@
 /**
  * Service to communicate with the search engine
  */
-readonly class SearchEngineNotifier
+class SearchEngineNotifier
 {
     public function __construct(
         protected RequestFactory $requestFactory,