diff --git a/Classes/Update/PowermailLanguageUpdateWizard.php b/Classes/Update/PowermailLanguageUpdateWizard.php
index ee9c7c3e0..39290a07d 100644
--- a/Classes/Update/PowermailLanguageUpdateWizard.php
+++ b/Classes/Update/PowermailLanguageUpdateWizard.php
@@ -22,11 +22,6 @@
 #[UpgradeWizard('powermailLanguageUpdateWizard')]
 class PowermailLanguageUpdateWizard implements UpgradeWizardInterface
 {
-    public function getIdentifier(): string
-    {
-        return 'powermailLanguageUpdateWizard';
-    }
-
     public function getTitle(): string
     {
         return 'Powermail: Update language settings in mails and answers (relevant for entries from < 8.0.0)';
diff --git a/Classes/Update/PowermailPermissionSubmoduleUpdater.php b/Classes/Update/PowermailPermissionSubmoduleUpdater.php
index a6789a4b8..f3e0c76cc 100644
--- a/Classes/Update/PowermailPermissionSubmoduleUpdater.php
+++ b/Classes/Update/PowermailPermissionSubmoduleUpdater.php
@@ -22,11 +22,6 @@
 #[UpgradeWizard('powermailPermissionSubmodulesUpdater')]
 class PowermailPermissionSubmoduleUpdater implements UpgradeWizardInterface
 {
-    public function getIdentifier(): string
-    {
-        return 'powermailPermissionSubmodulesUpdater';
-    }
-
     public function getTitle(): string
     {
         return 'EXT:powermail: Grant permissions for submodules to editors';
diff --git a/Classes/Update/PowermailPermissionUpdater.php b/Classes/Update/PowermailPermissionUpdater.php
index 4472a85ee..8ac6f90eb 100644
--- a/Classes/Update/PowermailPermissionUpdater.php
+++ b/Classes/Update/PowermailPermissionUpdater.php
@@ -22,11 +22,6 @@
 #[UpgradeWizard('powermailPermissionUpdater')]
 class PowermailPermissionUpdater implements UpgradeWizardInterface
 {
-    public function getIdentifier(): string
-    {
-        return 'powermailPermissionUpdater';
-    }
-
     public function getTitle(): string
     {
         return 'EXT:powermail: Migrate plugin permissions';
diff --git a/Classes/Update/PowermailPluginUpdater.php b/Classes/Update/PowermailPluginUpdater.php
index 30a8ec64b..8d42f599c 100644
--- a/Classes/Update/PowermailPluginUpdater.php
+++ b/Classes/Update/PowermailPluginUpdater.php
@@ -44,11 +44,6 @@ public function __construct()
         $this->flexFormService = GeneralUtility::makeInstance(FlexFormService::class);
     }
 
-    public function getIdentifier(): string
-    {
-        return 'powermailPluginUpdater';
-    }
-
     public function getTitle(): string
     {
         return 'Powermail: Migrate list types and switchable controller actions to CTypes';
diff --git a/Classes/Update/PowermailRelationUpdateWizard.php b/Classes/Update/PowermailRelationUpdateWizard.php
index 65193ff3d..27874f64f 100644
--- a/Classes/Update/PowermailRelationUpdateWizard.php
+++ b/Classes/Update/PowermailRelationUpdateWizard.php
@@ -22,11 +22,6 @@
 #[UpgradeWizard('powermailRelationUpdateWizard')]
 class PowermailRelationUpdateWizard implements UpgradeWizardInterface
 {
-    public function getIdentifier(): string
-    {
-        return 'powermailRelationUpdateWizard';
-    }
-
     public function getTitle(): string
     {
         return 'Powermail: Update relations in database (relevant for entries from < 8.0.0)';
diff --git a/Classes/Update/PowermailTextNullUpdateWizard.php b/Classes/Update/PowermailTextNullUpdateWizard.php
index 47fd0e219..209a96c4a 100644
--- a/Classes/Update/PowermailTextNullUpdateWizard.php
+++ b/Classes/Update/PowermailTextNullUpdateWizard.php
@@ -17,11 +17,6 @@
 #[UpgradeWizard('powermailTextNullUpdateWizard')]
 class PowermailTextNullUpdateWizard implements UpgradeWizardInterface
 {
-    public function getIdentifier(): string
-    {
-        return 'powermailTextNullUpdateWizard';
-    }
-
     public function getTitle(): string
     {
         return 'Powermail: Update all database TEXT fields that have a null value with a default value';