diff --git a/modules/erp/import-integration/shopify-delta-run.php b/modules/erp/import-integration/shopify-delta-run.php
index 3776a1c..9352d44 100644
--- a/modules/erp/import-integration/shopify-delta-run.php
+++ b/modules/erp/import-integration/shopify-delta-run.php
@@ -2,6 +2,7 @@
 declare(strict_types=1);
 
 require_once __DIR__ . '/../../../modules/shared/db.php';
+require_once __DIR__ . '/../../../modules/shared/webhook_throttle.php';
 require_once __DIR__ . '/shopify-api.php';
 require_once __DIR__ . '/service.php';
 require_once __DIR__ . '/../bestellungen/shopify-projection.php';