diff --git a/composer.json b/composer.json
index 7cd2cc9c..f2fdcacd 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "buckaroo/sdk",
     "description": "Buckaroo payment SDK",
     "license": "MIT",
-    "version": "1.17.0",
+    "version": "1.17.1",
     "type": "library",
     "require": {
         "php": "^8.1",
diff --git a/example/transactions/sofort.php b/example/transactions/sofort.php
deleted file mode 100644
index 0db0a955..00000000
--- a/example/transactions/sofort.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-require_once '../bootstrap.php';
-
-use Buckaroo\BuckarooClient;
-
-$buckaroo = new BuckarooClient($_ENV['BPE_WEBSITE_KEY'], $_ENV['BPE_SECRET_KEY']);
-
-//Also accepts json
-//Pay
-$response = $buckaroo->method('sofortueberweisung')->pay([
-    'invoice' => uniqid(),
-    'amountDebit' => 10.10,
-]);
-
-
-//Refund
-$response = $buckaroo->method('sofortueberweisung')->refund([
-    'invoice' => '', //Set invoice number of the transaction to refund
-    'originalTransactionKey' => '', //Set transaction key of the transaction to refund
-    'amountCredit' => 10.10,
-]);
diff --git a/src/Handlers/HMAC/Hmac.php b/src/Handlers/HMAC/Hmac.php
index 5b3befb6..09d16362 100644
--- a/src/Handlers/HMAC/Hmac.php
+++ b/src/Handlers/HMAC/Hmac.php
@@ -51,7 +51,7 @@ public function base64Data($data = null)
             if (is_array($data))
             {
                 $data = mb_convert_encoding(
-                    json_encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE),
+                    json_encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRESERVE_ZERO_FRACTION),
                     'UTF-8',
                     'auto'
                 );
diff --git a/src/PaymentMethods/PaymentMethodFactory.php b/src/PaymentMethods/PaymentMethodFactory.php
index b03b2b2f..b0bcde8a 100644
--- a/src/PaymentMethods/PaymentMethodFactory.php
+++ b/src/PaymentMethods/PaymentMethodFactory.php
@@ -33,7 +33,6 @@
 use Buckaroo\PaymentMethods\Alipay\Alipay;
 use Buckaroo\PaymentMethods\In3Old\In3Old;
 use Buckaroo\PaymentMethods\Paypal\Paypal;
-use Buckaroo\PaymentMethods\Sofort\Sofort;
 use Buckaroo\PaymentMethods\Thunes\Thunes;
 use Buckaroo\PaymentMethods\Belfius\Belfius;
 use Buckaroo\PaymentMethods\Billink\Billink;
@@ -112,7 +111,6 @@ class PaymentMethodFactory
         EPS::class => ['eps'],
         ExternalPayment::class => ['externalpayment'],
         Emandates::class => ['emandates'],
-        Sofort::class => ['sofort', 'sofortueberweisung'],
         Marketplaces::class => ['marketplaces'],
         NoServiceSpecifiedPayment::class => ['noservice'],
         Payconiq::class => ['payconiq'],
diff --git a/src/PaymentMethods/Sofort/Sofort.php b/src/PaymentMethods/Sofort/Sofort.php
deleted file mode 100644
index 68adc948..00000000
--- a/src/PaymentMethods/Sofort/Sofort.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-/*
- * NOTICE OF LICENSE
- *
- * This source file is subject to the MIT License
- * It is available through the world-wide-web at this URL:
- * https://tldrlegal.com/license/mit-license
- * If you are unable to obtain it through the world-wide-web, please send an email
- * to support@buckaroo.nl so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade this module to newer
- * versions in the future. If you wish to customize this module for your
- * needs please contact support@buckaroo.nl for more information.
- *
- * @copyright Copyright (c) Buckaroo B.V.
- * @license   https://tldrlegal.com/license/mit-license
- */
-
-declare(strict_types=1);
-
-namespace Buckaroo\PaymentMethods\Sofort;
-
-use Buckaroo\Models\Model;
-use Buckaroo\PaymentMethods\Interfaces\Combinable;
-use Buckaroo\PaymentMethods\PayablePaymentMethod;
-use Buckaroo\Transaction\Response\TransactionResponse;
-
-class Sofort extends PayablePaymentMethod implements Combinable
-{
-    protected string $paymentName = 'sofortueberweisung';
-    protected int $serviceVersion = 2;
-
-    /**
-     * @param Model|null $model
-     * @return TransactionResponse
-     */
-    public function instantRefund(?Model $model = null):TransactionResponse
-    {
-        $this->setRefundPayload();
-
-        $this->setServiceList('instantRefund', $model);
-
-        return $this->postRequest();
-    }
-}
diff --git a/tests/Buckaroo/Payments/SofortTest.php b/tests/Buckaroo/Payments/SofortTest.php
deleted file mode 100644
index e0656911..00000000
--- a/tests/Buckaroo/Payments/SofortTest.php
+++ /dev/null
@@ -1,62 +0,0 @@
-<?php
-/*
- * NOTICE OF LICENSE
- *
- * This source file is subject to the MIT License
- * It is available through the world-wide-web at this URL:
- * https://tldrlegal.com/license/mit-license
- * If you are unable to obtain it through the world-wide-web, please send an email
- * to support@buckaroo.nl so we can send you a copy immediately.
- *
- * DISCLAIMER
- *
- * Do not edit or add to this file if you wish to upgrade this module to newer
- * versions in the future. If you wish to customize this module for your
- * needs please contact support@buckaroo.nl for more information.
- *
- * @copyright Copyright (c) Buckaroo B.V.
- * @license   https://tldrlegal.com/license/mit-license
- */
-
-namespace Tests\Buckaroo\Payments;
-
-use Tests\Buckaroo\BuckarooTestCase;
-
-class SofortTest extends BuckarooTestCase
-{
-    protected array $paymentPayload;
-    
-    protected function setUp(): void
-    {
-        $this->paymentPayload = ([
-            'invoice' => uniqid(),
-            'amountDebit' => 10.10,
-        ]);
-    }
-
-    /**
-     * @return void
-     * @test
-     */
-    public function it_creates_a_sofort_payment()
-    {
-        $response = $this->buckaroo->method('sofortueberweisung')->pay($this->paymentPayload);
-
-        $this->assertTrue($response->isPendingProcessing());
-    }
-
-
-    /**
-     * @return void
-     * @test
-     */
-    public function it_creates_a_sofort_instant_refund()
-    {
-        $response = $this->buckaroo->method('sofortueberweisung')->instantRefund([
-            'invoice' => uniqid(),
-            'amountCredit' => 10.10,
-        ]);
-
-        $this->assertTrue($response->isValidationFailure());
-    }
-}