diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a025addc..78b5b30ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [4.5.0] - 2020-10-26
 
 ### Added
+  - Compatibility with WooCommerce v4.6.x
   - Improved security (added access token in the header for all calls to Mercado Livre and Mercado Pago endpoints)
   - Add new endpoint to validate Access Token and Public key to substitute old process to validation
   - Improved performance with CSS minification
diff --git a/changelog.log b/changelog.log
index 9dbc3c769..5c406c17f 100644
--- a/changelog.log
+++ b/changelog.log
@@ -2,6 +2,7 @@ CHANGELOG:
 == Changelog ==
 = v4.5.0 (26/10/2020) =
 * Features
+  - Compatibility with WooCommerce v4.6.x
   - Improved security (added access token in the header for all calls to Mercado Livre and Mercado Pago endpoints)
   - Add new endpoint to validate Access Token and Public key to substitute old process to validation
   - Improved performance with CSS minification
diff --git a/includes/notification/WC_WooMercadoPago_Notification_Abstract.php b/includes/notification/WC_WooMercadoPago_Notification_Abstract.php
index 3016166d2..1becce398 100644
--- a/includes/notification/WC_WooMercadoPago_Notification_Abstract.php
+++ b/includes/notification/WC_WooMercadoPago_Notification_Abstract.php
@@ -374,7 +374,7 @@ protected function validateOrderNoteType($data, $order, $status)
     {
         $paymentId = $data['id'];
 
-        if($data['ipn_type'] === 'merchant_order') {
+        if(isset($data['ipn_type']) && $data['ipn_type'] === 'merchant_order') {
             $payments = [];
             foreach($data['payments'] as $payment) {
                 $payments[] = $payment['id'];
diff --git a/readme.txt b/readme.txt
index 8d1d7065e..512c4bdf5 100644
--- a/readme.txt
+++ b/readme.txt
@@ -117,6 +117,7 @@ Check out our <a href="https://www.mercadopago.com.br/developers/pt/plugins_sdks
 == Changelog ==
 = v4.5.0 (26/10/2020) =
 * Features
+  - Compatibility with WooCommerce v4.6.x
   - Improved security (added access token in the header for all calls to Mercado Livre and Mercado Pago endpoints)
   - Add new endpoint to validate Access Token and Public key to substitute old process to validation
   - Improved performance with CSS minification
diff --git a/woocommerce-mercadopago.php b/woocommerce-mercadopago.php
index dc79b2191..c39cee23d 100644
--- a/woocommerce-mercadopago.php
+++ b/woocommerce-mercadopago.php
@@ -10,7 +10,7 @@
  * Text Domain: woocommerce-mercadopago
  * Domain Path: /i18n/languages/
  * WC requires at least: 3.0.0
- * WC tested up to: 4.5.0
+ * WC tested up to: 4.6.0
  * @package MercadoPago
  * @category Core
  * @author Mercado Pago