diff --git a/src/Extensions/Shopware/Install/Command/ShopwareClearCacheCommand.php b/src/Extensions/Shopware/Install/Command/ShopwareClearCacheCommand.php
index 221e9ca..fb86e7b 100644
--- a/src/Extensions/Shopware/Install/Command/ShopwareClearCacheCommand.php
+++ b/src/Extensions/Shopware/Install/Command/ShopwareClearCacheCommand.php
@@ -35,7 +35,7 @@ public function validateShopwareDirectory($path): string
     /**
      * {@inheritdoc}
      */
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('cache:clear')
diff --git a/src/Extensions/Shopware/RunCli/Command/RunCliCommand.php b/src/Extensions/Shopware/RunCli/Command/RunCliCommand.php
index 3867b96..f736ac6 100644
--- a/src/Extensions/Shopware/RunCli/Command/RunCliCommand.php
+++ b/src/Extensions/Shopware/RunCli/Command/RunCliCommand.php
@@ -56,7 +56,7 @@ public function getValidShopwarePath($shopwarePath, IoService $ioService): strin
     /**
      * {@inheritdoc}
      */
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('run')