diff --git a/src/Connectors/OfferConnector.php b/src/Connectors/OfferConnector.php
index eb404ff..520bf07 100644
--- a/src/Connectors/OfferConnector.php
+++ b/src/Connectors/OfferConnector.php
@@ -75,7 +75,7 @@ public function requestOfferExportFile(): ProcessStatus
     public function retrieveOfferExportFile(string $exportId): ExportOfferCollection
     {
         $data = $this->send('GET', "offers/export/$exportId", headers: [
-            'Accept' => 'application/vnd.retailer.v8+csv',
+            'Accept' => 'application/vnd.retailer.v9+csv',
         ]);
 
         return ExportOfferCollection::fromPayload($data);
diff --git a/src/Util/RequestUtil.php b/src/Util/RequestUtil.php
index 0d2286b..babf6b9 100644
--- a/src/Util/RequestUtil.php
+++ b/src/Util/RequestUtil.php
@@ -8,7 +8,7 @@
 
 final class RequestUtil
 {
-    public const CONTENT_TYPE = 'application/vnd.retailer.v8+json';
+    public const CONTENT_TYPE = 'application/vnd.retailer.v9+json';
 
     public static function createRequest(string $method, string $uri, array $headers = [], array $query = [], mixed $body = null): Request
     {
diff --git a/src/Util/ResponseUtil.php b/src/Util/ResponseUtil.php
index 52b5d8f..fd69831 100644
--- a/src/Util/ResponseUtil.php
+++ b/src/Util/ResponseUtil.php
@@ -22,7 +22,7 @@ public static function assertOk(ResponseInterface $response): void
     public static function decodeBody(ResponseInterface $response): mixed
     {
         $contentType = $response->getHeaderLine('Content-Type');
-        if (str_contains($contentType, 'application/vnd.retailer.v8+json')) {
+        if (str_contains($contentType, 'application/vnd.retailer.v9+json')) {
             return self::decodeJson($response);
         }
 
diff --git a/tests/Integration/OffersTest.php b/tests/Integration/OffersTest.php
index 08a4aa6..decd7eb 100644
--- a/tests/Integration/OffersTest.php
+++ b/tests/Integration/OffersTest.php
@@ -23,7 +23,7 @@ final class OffersTest extends IntegrationTestCase
 {
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_create_an_offer_export_csv_file
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_create_an_offer_export_csv_file
      */
     public function create_an_offer_export_csv_file(): void
     {
@@ -36,7 +36,7 @@ public function create_an_offer_export_csv_file(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_retrieve_an_offer_export_csv_file
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_retrieve_an_offer_export_csv_file
      */
     public function retrieve_an_offer_export_csv_file(): void
     {
@@ -49,7 +49,7 @@ public function retrieve_an_offer_export_csv_file(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_retrieve_an_offer
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_retrieve_an_offer
      */
     public function retrieve_an_offer(): void
     {
@@ -62,7 +62,7 @@ public function retrieve_an_offer(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
      */
     public function create_fbr_offer_for_ean_9780471117094_with_condition_new_with_vvb_proposition(): void
     {
@@ -98,7 +98,7 @@ public function create_fbr_offer_for_ean_9780471117094_with_condition_new_with_v
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_create_fbr_offer_for_ean_0045496420253_with_condition_moderate
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_create_fbr_offer_for_ean_0045496420253_with_condition_moderate
      */
     public
     function create_fbr_offer_for_ean_0045496420253_with_condition_moderate(): void
@@ -136,7 +136,7 @@ function create_fbr_offer_for_ean_0045496420253_with_condition_moderate(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_delete_an_already_existing_offer_that_is_known_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_delete_an_already_existing_offer_that_is_known_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
      */
     public
     function delete_an_already_existing_offer_that_is_known_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8(): void
@@ -150,7 +150,7 @@ function delete_an_already_existing_offer_that_is_known_with_offerid_13722de8_81
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_update_the_price_for_a_specific_offer
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_update_the_price_for_a_specific_offer
      */
     public
     function update_the_price_for_a_specific_offer(): void
@@ -174,7 +174,7 @@ function update_the_price_for_a_specific_offer(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_update_the_current_stock_level_for_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_update_the_current_stock_level_for_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
      */
     public
     function update_the_current_stock_level_for_offerid_13722de8_8182_d161_5422_4a0a1caab5c8(): void
@@ -190,7 +190,7 @@ function update_the_current_stock_level_for_offerid_13722de8_8182_d161_5422_4a0a
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8
      */
     public
     function update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8(): void
@@ -214,7 +214,7 @@ function update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_542
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-OFFERS.html#_update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8_2
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-OFFERS.html#_update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8_2
      */
     public
     function update_of_an_already_existing_offer_with_offerid_13722de8_8182_d161_5422_4a0a1caab5c8_2(): void
diff --git a/tests/Integration/OrdersTest.php b/tests/Integration/OrdersTest.php
index e15b693..0163ca6 100644
--- a/tests/Integration/OrdersTest.php
+++ b/tests/Integration/OrdersTest.php
@@ -11,7 +11,7 @@ final class OrdersTest extends IntegrationTestCase
 {
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_single_fbb_order_with_order_id_1042823870
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_single_fbb_order_with_order_id_1042823870
      */
     public function get_single_fbb_order_with_order_id_1042823870(): void
     {
@@ -24,7 +24,7 @@ public function get_single_fbb_order_with_order_id_1042823870(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_single_fbr_order_with_order_id_1042831430
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_single_fbr_order_with_order_id_1042831430
      */
     public function get_single_fbr_order_with_order_id_1042831430(): void
     {
@@ -37,7 +37,7 @@ public function get_single_fbr_order_with_order_id_1042831430(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_single_fbr_order_with_order_id_1042831430
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_single_fbr_order_with_order_id_1042831430
      */
     public function get_single_fbb_order_with_order_id_1043965710(): void
     {
@@ -50,7 +50,7 @@ public function get_single_fbb_order_with_order_id_1043965710(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_single_fbr_order_with_order_id_a4k8290lp0
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_single_fbr_order_with_order_id_a4k8290lp0
      */
     public function get_single_fbr_order_with_order_id_a4k8290lp0(): void
     {
@@ -63,7 +63,7 @@ public function get_single_fbr_order_with_order_id_a4k8290lp0(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_single_fbr_order_with_order_id_1043946570
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_single_fbr_order_with_order_id_1043946570
      */
     public function get_single_fbr_order_with_order_id_1043946570(): void
     {
@@ -76,7 +76,7 @@ public function get_single_fbr_order_with_order_id_1043946570(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_single_fbr_order_with_order_id_b3k8290lp0
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_single_fbr_order_with_order_id_b3k8290lp0
      */
     public function get_single_fbr_order_with_order_id_b3k8290lp0(): void
     {
@@ -89,7 +89,7 @@ public function get_single_fbr_order_with_order_id_b3k8290lp0(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_fbb_orders_with_status_all
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_fbb_orders_with_status_all
      */
     public function get_fbb_orders_with_status_all(): void
     {
@@ -102,7 +102,7 @@ public function get_fbb_orders_with_status_all(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_fbb_orders_with_status_open
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_fbb_orders_with_status_open
      */
     public function get_fbb_orders_with_status_open(): void
     {
@@ -115,7 +115,7 @@ public function get_fbb_orders_with_status_open(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_fbr_orders_with_status_all
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_fbr_orders_with_status_all
      */
     public function get_fbr_orders_with_status_all(): void
     {
@@ -128,7 +128,7 @@ public function get_fbr_orders_with_status_all(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-ORDERS.html#_get_fbr_orders_with_status_open
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-ORDERS.html#_get_fbr_orders_with_status_open
      */
     public function get_fbr_orders_with_status_open(): void
     {
diff --git a/tests/Integration/ProcessStatusesTest.php b/tests/Integration/ProcessStatusesTest.php
index 438ce4d..fed0687 100644
--- a/tests/Integration/ProcessStatusesTest.php
+++ b/tests/Integration/ProcessStatusesTest.php
@@ -8,7 +8,7 @@ final class ProcessStatusesTest extends IntegrationTestCase
 {
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-PROCESS_STATUS.html#_generate_a_process_status_pending_using_entity_id_and_event_type
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-PROCESS_STATUS.html#_generate_a_process_status_pending_using_entity_id_and_event_type
      */
     public function generate_a_process_status_pending_using_entity_id_and_event_type(): void
     {
@@ -21,7 +21,7 @@ public function generate_a_process_status_pending_using_entity_id_and_event_type
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-PROCESS_STATUS.html#_generate_a_process_status_failure_using_entity_id_and_event_type
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-PROCESS_STATUS.html#_generate_a_process_status_failure_using_entity_id_and_event_type
      */
     public function generate_a_process_status_failure_using_entity_id_and_event_type(): void
     {
@@ -34,7 +34,7 @@ public function generate_a_process_status_failure_using_entity_id_and_event_type
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-PROCESS_STATUS.html#_generate_a_process_status_timeout_using_entity_id_and_event_type
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-PROCESS_STATUS.html#_generate_a_process_status_timeout_using_entity_id_and_event_type
      */
     public function generate_a_process_status_timeout_using_entity_id_and_event_type(): void
     {
@@ -47,7 +47,7 @@ public function generate_a_process_status_timeout_using_entity_id_and_event_type
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v8-PROCESS_STATUS.html#_generate_a_process_status_success_using_entity_id_and_event_type
+     * @see https://api.bol.com/retailer/public/Retailer-API/demo/v9-PROCESS_STATUS.html#_generate_a_process_status_success_using_entity_id_and_event_type
      */
     public function generate_a_process_status_success_using_entity_id_and_event_type(): void
     {
diff --git a/tests/Integration/SubscriptionsTest.php b/tests/Integration/SubscriptionsTest.php
index 92fa826..437817d 100644
--- a/tests/Integration/SubscriptionsTest.php
+++ b/tests/Integration/SubscriptionsTest.php
@@ -8,7 +8,7 @@ final class SubscriptionsTest extends IntegrationTestCase
 {
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/api/demo/v8-SUBSCRIPTIONS.html#_retrieve_push_notification_subscription_list
+     * @see https://api.bol.com/retailer/public/api/demo/v9-SUBSCRIPTIONS.html#_retrieve_push_notification_subscription_list
      */
     public function retrieve_push_notification_subscription_list(): void
     {
@@ -21,7 +21,7 @@ public function retrieve_push_notification_subscription_list(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/api/demo/v8-SUBSCRIPTIONS.html#_trigger_sending_of_a_test_push_notification_for_subscription
+     * @see https://api.bol.com/retailer/public/api/demo/v9-SUBSCRIPTIONS.html#_trigger_sending_of_a_test_push_notification_for_subscription
      */
     public function trigger_sending_of_a_test_push_notification_for_subscription(): void
     {
@@ -34,7 +34,7 @@ public function trigger_sending_of_a_test_push_notification_for_subscription():
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/api/demo/v8-SUBSCRIPTIONS.html#_create_push_notification_subscription
+     * @see https://api.bol.com/retailer/public/api/demo/v9-SUBSCRIPTIONS.html#_create_push_notification_subscription
      */
     public function create_push_notification_subscription(): void
     {
@@ -47,7 +47,7 @@ public function create_push_notification_subscription(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/api/demo/v8-SUBSCRIPTIONS.html#_delete_existing_push_notification_subscription
+     * @see https://api.bol.com/retailer/public/api/demo/v9-SUBSCRIPTIONS.html#_delete_existing_push_notification_subscription
      */
     public function delete_existing_push_notification_subscription(): void
     {
@@ -60,7 +60,7 @@ public function delete_existing_push_notification_subscription(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/api/demo/v8-SUBSCRIPTIONS.html#_retrieve_push_notification_subscription
+     * @see https://api.bol.com/retailer/public/api/demo/v9-SUBSCRIPTIONS.html#_retrieve_push_notification_subscription
      */
     public function retrieve_push_notification_subscription(): void
     {
@@ -73,7 +73,7 @@ public function retrieve_push_notification_subscription(): void
 
     /**
      * @test
-     * @see https://api.bol.com/retailer/public/api/demo/v8-SUBSCRIPTIONS.html#_update_existing_push_notification_subscription
+     * @see https://api.bol.com/retailer/public/api/demo/v9-SUBSCRIPTIONS.html#_update_existing_push_notification_subscription
      */
     public function update_existing_push_notification_subscription(): void
     {