diff --git a/database/seeders/PaymentProviderSeeder.php b/database/seeders/PaymentProviderSeeder.php
index 19e1d21..0665ef3 100644
--- a/database/seeders/PaymentProviderSeeder.php
+++ b/database/seeders/PaymentProviderSeeder.php
@@ -112,11 +112,19 @@ class PaymentProviderSeeder extends Seeder
                 'configuration' => [
                     'class' => 'App\\Services\\Payments\\Providers\\OxapayProvider',
                     'merchant_api_key' => env('OXAPAY_MERCHANT_API_KEY', 'merchant_...'),
+                    'sandbox_merchant_api_key' => env('OXAPAY_SANDBOX_MERCHANT_API_KEY', 'merchant_sb_...'),
                     'payout_api_key' => env('OXAPAY_PAYOUT_API_KEY', 'payout_...'),
-                    'webhook_url' => env('OXAPAY_WEBHOOK_URL', env('APP_URL') . '/webhook/oxapay'),
+                    'sandbox_payout_api_key' => env('OXAPAY_SANDBOX_PAYOUT_API_KEY', 'payout_sb_...'),
+                    'callback_url' => env('OXAPAY_CALLBACK_URL', env('APP_URL') . '/webhook/oxapay'),
                     'success_url' => env('APP_URL') . '/payment/success',
                     'cancel_url' => env('APP_URL') . '/payment/cancel',
                     'sandbox' => env('OXAPAY_SANDBOX', true),
+                    'currency' => env('OXAPAY_CURRENCY', 'USD'), // string
+                    'lifetime' => env('OXAPAY_LIFETIME', 30), // integer · min: 15 · max: 2880
+                    'fee_paid_by_payer' => env('OXAPAY_FEE_PAID_BY_PAYER', 1), // number · decimal · max: 1
+                    'under_paid_coverage' => env('OXAPAY_UNDER_PAID_COVERAGE', 2.5), // number · decimal · max: 60
+                    'auto_withdrawal' => env('OXAPAY_AUTO_WITHDRAWAL', false), // boolean
+                    'mixed_payment' => env('OXAPAY_MIXED_PAYMENT', false), // boolean
                 ],
                 'supports_recurring' => false,
                 'supports_one_time' => true,