diff --git a/Admin/Installer.php b/Admin/Installer.php
index 46cc26a..c65467b 100644
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -28,7 +28,7 @@ use phpOMS\System\File\PathException;
  * @link    https://orange-management.org
  * @since   1.0.0
  */
-class Installer extends InstallerAbstract
+final class Installer extends InstallerAbstract
 {
     /**
      * Install data from providing modules.