diff --git a/README.md b/README.md
index 90fb836..baec01c 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ account dashboard.
 
 ## Documentation
 
-[Documentation](https://plugin-documentation.wallee.com/wallee-payment/jtl-5/1.0.29/docs/en/documentation.html)
+[Documentation](https://plugin-documentation.wallee.com/wallee-payment/jtl-5/1.0.30/docs/en/documentation.html)
 
 ## License
 
diff --git a/Webhooks/Strategies/WalleeNameOrderUpdateRefundStrategy.php b/Webhooks/Strategies/WalleeNameOrderUpdateRefundStrategy.php
index e40ec89..bf07712 100644
--- a/Webhooks/Strategies/WalleeNameOrderUpdateRefundStrategy.php
+++ b/Webhooks/Strategies/WalleeNameOrderUpdateRefundStrategy.php
@@ -7,6 +7,9 @@
 use Plugin\jtl_wallee\Services\WalleeTransactionService;
 use Plugin\jtl_wallee\Webhooks\Strategies\Interfaces\WalleeOrderUpdateStrategyInterface;
 use Wallee\Sdk\Model\TransactionState;
+use JTL\Catalog\Product\Artikel;
+use JTL\Checkout\StockUpdater;
+use JTL\Helpers\Product;
 
 class WalleeNameOrderUpdateRefundStrategy implements WalleeOrderUpdateStrategyInterface
 {
@@ -25,11 +28,23 @@ class WalleeNameOrderUpdateRefundStrategy implements WalleeOrderUpdateStrategyIn
      */
     private $orderService;
 
+    /**
+     * The StockUpdater's JTL service.
+     *
+     * @var JTL\Checkout\StockUpdater
+     */
+    protected $stockUpdater;
+
     public function __construct(WalleeRefundService $refundService, WalleeTransactionService $transactionService)
     {
         $this->refundService = $refundService;
         $this->transactionService = $transactionService;
         $this->orderService = new WalleeOrderService();
+
+        if (!function_exists('getStockUpdater')) {
+            require_once \PFAD_ROOT . \PFAD_INCLUDES . 'bestellabschluss_inc.php';
+        }
+        $this->stockUpdater = getStockUpdater();
     }
 
     /**
@@ -54,6 +69,31 @@ public function updateOrderStatus(string $entityId): void
         $transaction = $refund->getTransaction();
         $amountToBeRefunded = round(floatval($transaction->getCompletedAmount()) - $transaction->getRefundedAmount(), 2);
 
+        // Restores the stock of the refunded product.
+        $reductions = $refund->getReductions();
+        $quantity = 0;
+        if (count($reductions) > 0) {
+            foreach ($reductions as $reduction) {
+                $quantity = $reduction->getQuantityReduction();
+                $line_item_id = $reduction->getLineItemUniqueId();
+                if ($quantity > 0) {
+                    foreach ($refund->getReducedLineItems() as $line_item) {
+                        if ($line_item_id == $line_item->getUniqueId()) {
+                            $product_name = $line_item->getName();
+                            $product = Product::getProductByAttribute('cName', $product_name);
+                            if ($product instanceof Artikel) {
+                                $productID = $product->getID();
+                                // Amount is negative because we're filling up the stock.
+                                $this->stockUpdater->updateProductStockLevel($productID, -1, $quantity);
+                            }
+                        }
+                    }
+                }
+
+                $quantity = 0;
+            }
+        }
+
         if ($amountToBeRefunded > 0) {
             $this->orderService->updateOrderStatus($orderId, \BESTELLUNG_STATUS_BEZAHLT, \BESTELLUNG_STATUS_TEILVERSANDT);
             $this->transactionService->updateTransactionStatus($transaction->getId(), 'PARTIALLY REFUNDED');
diff --git a/docs/en/documentation.html b/docs/en/documentation.html
index a4ff46b..ccd819e 100644
--- a/docs/en/documentation.html
+++ b/docs/en/documentation.html
@@ -23,7 +23,7 @@ <h2>Documentation</h2>				</div>
 		</a>
 	</li>
 	<li>
-		<a href="https://github.com/wallee-payment/jtl-5/releases/tag/1.0.29/">
+		<a href="https://github.com/wallee-payment/jtl-5/releases/tag/1.0.30/">
 			Source
 		</a>
 	</li>
diff --git a/frontend/wallee_iframe.php b/frontend/wallee_iframe.php
index 35b66db..b9d41d3 100644
--- a/frontend/wallee_iframe.php
+++ b/frontend/wallee_iframe.php
@@ -1,5 +1,6 @@
 <?php declare(strict_types=1);
 
+use JTL\Shop;
 use Plugin\jtl_wallee\WalleeHelper;
 
 /** @global \JTL\Smarty\JTLSmarty $smarty */
diff --git a/frontend/wallee_thank_you_page.php b/frontend/wallee_thank_you_page.php
index 2012bb9..91655fa 100644
--- a/frontend/wallee_thank_you_page.php
+++ b/frontend/wallee_thank_you_page.php
@@ -1,6 +1,7 @@
 <?php declare(strict_types=1);
 
 use JTL\Checkout\Bestellung;
+use JTL\Shop;
 use Plugin\jtl_wallee\Services\WalleeTransactionService;
 use Plugin\jtl_wallee\WalleeApiClient;
 
diff --git a/info.xml b/info.xml
index b2edaa9..5875e82 100644
--- a/info.xml
+++ b/info.xml
@@ -9,7 +9,7 @@
     <Icon>logo.jpg</Icon>
     <PluginID>jtl_wallee</PluginID>
     <CreateDate>2023-05-29</CreateDate>
-    <Version>1.0.29</Version>
+    <Version>1.0.30</Version>
     <Install>
         <Locales>
             <Variable>
diff --git a/vendor/composer/installed.php b/vendor/composer/installed.php
index b63cbaf..df5ade1 100644
--- a/vendor/composer/installed.php
+++ b/vendor/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '23881441945da62c99ed76e8ccae1abaa8c573cc',
+        'reference' => '444a0d4db972eeb5f986817906a3c2d5411820ed',
         'type' => 'library',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '23881441945da62c99ed76e8ccae1abaa8c573cc',
+            'reference' => '444a0d4db972eeb5f986817906a3c2d5411820ed',
             'type' => 'library',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),