diff --git a/Classes/Domain/Finisher/Form/AddToCartFinisher.php b/Classes/Domain/Finisher/Form/AddToCartFinisher.php
index 2ec31e8b..d0247251 100644
--- a/Classes/Domain/Finisher/Form/AddToCartFinisher.php
+++ b/Classes/Domain/Finisher/Form/AddToCartFinisher.php
@@ -124,7 +124,6 @@ protected function getProductBackendVariant(
             BeVariant::class,
             PriceCategory::class . '-' . $this->priceCategory->getUid(),
             $product,
-            null,
             $this->priceCategory->getTitle(),
             $this->priceCategory->getSku(),
             1,
diff --git a/Classes/EventListener/RetrieveProductsFromRequest.php b/Classes/EventListener/RetrieveProductsFromRequest.php
index 9f2ae7d2..a2cc3147 100644
--- a/Classes/EventListener/RetrieveProductsFromRequest.php
+++ b/Classes/EventListener/RetrieveProductsFromRequest.php
@@ -196,7 +196,6 @@ protected function getProductBackendVariant(
             BeVariant::class,
             PriceCategory::class . '-' . $this->priceCategory->getUid(),
             $product,
-            null,
             $this->priceCategory->getTitle(),
             $this->priceCategory->getSku(),
             1,
diff --git a/Tests/Unit/Domain/Model/SpecialPriceTest.php b/Tests/Unit/Domain/Model/SpecialPriceTest.php
index 04e4285c..0e11f647 100644
--- a/Tests/Unit/Domain/Model/SpecialPriceTest.php
+++ b/Tests/Unit/Domain/Model/SpecialPriceTest.php
@@ -83,7 +83,7 @@ public function getFrontendUserGroupReturnsInitialValueNull(): void
     #[Test]
     public function setFrontendUserGroupSetsFrontendUserGroup(): void
     {
-        $frontendUserGroup = $this->createStub(
+        $frontendUserGroup = self::createStub(
             FrontendUserGroup::class
         );
         $this->specialPrice->setFrontendUserGroup($frontendUserGroup);
diff --git a/composer.json b/composer.json
index fbb562cf..6db69d21 100644
--- a/composer.json
+++ b/composer.json
@@ -49,7 +49,7 @@
         "php": "^8.1",
         "ext-json": "*",
         "ext-pdo": "*",
-        "extcode/cart": "^9.0",
+        "extcode/cart": "^10.0",
         "typo3/cms-core": "^12.4",
         "typo3/cms-extbase": "^12.4",
         "typo3/cms-fluid": "^12.4"
diff --git a/ext_emconf.php b/ext_emconf.php
index a7a4906e..3b443248 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -13,7 +13,7 @@
     'constraints' => [
         'depends' => [
             'typo3' => '12.4.0-12.4.99',
-            'cart' => '9.0.0',
+            'cart' => '10.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/shell.nix b/shell.nix
index 767318a0..07667f9c 100644
--- a/shell.nix
+++ b/shell.nix
@@ -111,6 +111,7 @@ let
       ./vendor/bin/codecept run
 
       pgrep -f "php -S" | xargs -r kill
+      pgrep -f "geckodriver" | xargs -r kill
     '';
   };