diff --git a/src/Plugin.php b/src/Plugin.php
index 2dc896cf9f103019b345f43b2ce192582255d8fe..16b615d7cf6824e08ab3245e16f6b18dfe09c644 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -4,7 +4,6 @@ namespace LakeDrops\Docker4Drupal;
 
 use Composer\Script\Event;
 use Composer\Script\ScriptEvents;
-use LakeDrops\Component\Composer\BaseHandlerInterface;
 use LakeDrops\Component\Composer\BasePlugin;
 
 /**
@@ -15,7 +14,7 @@ class Plugin extends BasePlugin {
   /**
    * {@inheritdoc}
    */
-  public function getHandlerClass(): BaseHandlerInterface {
+  public function getHandlerClass(): string {
     return Handler::class;
   }
 
@@ -44,12 +43,8 @@ class Plugin extends BasePlugin {
    *
    * @param \Composer\Script\Event $event
    *   The event that triggered the call of this function.
-   *
-   * @throws \Twig\Error\LoaderError
-   * @throws \Twig\Error\RuntimeError
-   * @throws \Twig\Error\SyntaxError
    */
-  public function configureProject(Event $event) {
+  public function configureProject(Event $event): void {
     /** @var Handler $handler */
     $handler = $this->handler;
     $handler
diff --git a/src/UpdateCommand.php b/src/UpdateCommand.php
index c5d0e94d096c9836f40ce3669255a7a75d200124..d31572dee704e87f1bd7204036f5d789d999634b 100644
--- a/src/UpdateCommand.php
+++ b/src/UpdateCommand.php
@@ -20,7 +20,7 @@ class UpdateCommand extends BaseCommand {
   /**
    * {@inheritdoc}
    */
-  public function getHandlerClass(): BaseHandlerInterface {
+  public function getHandlerClass(): string {
     return Handler::class;
   }