diff --git a/UPGRADE-API-1.11.md b/UPGRADE-API-1.11.md
index a2129d2817..cf4027d1ef 100644
--- a/UPGRADE-API-1.11.md
+++ b/UPGRADE-API-1.11.md
@@ -21,6 +21,8 @@
     sylius_api:
         product_image_prefix: 'media/image'
     ```
+   
+1. The method of the `/shop/orders/{tokenValue}/items` endpoint has been changed from `PATCH` to `POST`
 
 1. `Sylius\Bundle\ApiBundle\View\CartShippingMethodInterface` and `Sylius\Bundle\ApiBundle\View\CartShippingMethod` have been removed.
 
diff --git a/src/Sylius/Behat/Context/Api/Shop/CartContext.php b/src/Sylius/Behat/Context/Api/Shop/CartContext.php
index 50b46d86bf..eba875e4ca 100644
--- a/src/Sylius/Behat/Context/Api/Shop/CartContext.php
+++ b/src/Sylius/Behat/Context/Api/Shop/CartContext.php
@@ -187,7 +187,7 @@ final class CartContext implements Context
 
         $tokenValue = $this->pickupCart();
 
-        $request = Request::customItemAction('shop', 'orders', $tokenValue, HttpRequest::METHOD_PATCH, 'items');
+        $request = Request::customItemAction('shop', 'orders', $tokenValue, HttpRequest::METHOD_POST, 'items');
 
         $request->updateContent([
             'productCode' => $productData['code'],
@@ -678,7 +678,7 @@ final class CartContext implements Context
     {
         $tokenValue = $tokenValue ?? $this->pickupCart();
 
-        $request = Request::customItemAction('shop', 'orders', $tokenValue, HttpRequest::METHOD_PATCH, 'items');
+        $request = Request::customItemAction('shop', 'orders', $tokenValue, HttpRequest::METHOD_POST, 'items');
 
         $request->updateContent([
             'productVariant' => $this->iriConverter->getIriFromItem($this->productVariantResolver->getVariant($product)),
@@ -692,7 +692,7 @@ final class CartContext implements Context
     {
         $tokenValue = $tokenValue ?? $this->pickupCart();
 
-        $request = Request::customItemAction('shop', 'orders', $tokenValue, HttpRequest::METHOD_PATCH, 'items');
+        $request = Request::customItemAction('shop', 'orders', $tokenValue, HttpRequest::METHOD_POST, 'items');
 
         $request->updateContent([
             'productVariant' => $this->iriConverter->getIriFromItem($productVariant),
diff --git a/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/Order.xml b/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/Order.xml
index 36e55d2998..20b93f68a3 100644
--- a/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/Order.xml
+++ b/src/Sylius/Bundle/ApiBundle/Resources/config/api_resources/Order.xml
@@ -92,7 +92,7 @@
             </itemOperation>
 
             <itemOperation name="shop_add_item">
-                <attribute name="method">PATCH</attribute>
+                <attribute name="method">POST</attribute>
                 <attribute name="path">/shop/orders/{tokenValue}/items</attribute>
                 <attribute name="messenger">input</attribute>
                 <attribute name="input">Sylius\Bundle\ApiBundle\Command\Cart\AddItemToCart</attribute>
diff --git a/src/Sylius/Bundle/ApiBundle/Resources/config/services.xml b/src/Sylius/Bundle/ApiBundle/Resources/config/services.xml
index 905bfde93e..3e607913f2 100644
--- a/src/Sylius/Bundle/ApiBundle/Resources/config/services.xml
+++ b/src/Sylius/Bundle/ApiBundle/Resources/config/services.xml
@@ -58,6 +58,9 @@
             <argument>%api_platform.swagger.versions%</argument>
         </service>
 
+        <!--    TODO: Remove after bumping to Api Platform 3.0    -->
+        <service id="api_platform.action.post_item" alias="api_platform.action.placeholder" public="true" />
+
         <service id="Sylius\Bundle\ApiBundle\PropertyInfo\Extractor\EmptyPropertyListExtractor">
             <tag name="property_info.list_extractor" priority="-2000" />
         </service>