diff --git a/README.md b/README.md
index 1c648a47..382313a7 100644
--- a/README.md
+++ b/README.md
@@ -21,10 +21,10 @@ First time using Mercado Pago? Create your [Mercado Pago account](https://www.me
 2. Install PHP SDK for MercadoPago running in command line:
 
 ```
-composer require "mercadopago/dx-php:3.0.2"
+composer require "mercadopago/dx-php:3.0.3"
 ```
 
-> You can also run _composer require "mercadopago/dx-php:2.6.1"_ for PHP7.1 or _composer require "mercadopago/dx-php:1.12.5"_ for PHP5.6.
+> You can also run _composer require "mercadopago/dx-php:2.6.2"_ for PHP7.1 or _composer require "mercadopago/dx-php:1.12.6"_ for PHP5.6.
 
 3. Copy the access_token in the [credentials](https://www.mercadopago.com/developers/en/docs/your-integrations/credentials) section of the page and replace YOUR_ACCESS_TOKEN with it.
 
diff --git a/src/MercadoPago/MercadoPagoConfig.php b/src/MercadoPago/MercadoPagoConfig.php
index 4a1148b8..0956ea18 100644
--- a/src/MercadoPago/MercadoPagoConfig.php
+++ b/src/MercadoPago/MercadoPagoConfig.php
@@ -10,7 +10,7 @@
 class MercadoPagoConfig
 {
     /** @var string Mercado Pago SDK version. */
-    public static string $CURRENT_VERSION = "3.0.2";
+    public static string $CURRENT_VERSION = "3.0.3";
 
     /** @var string Mercado Pago Base URL */
     public static string $BASE_URL = "https://api.mercadopago.com";
@@ -19,10 +19,10 @@ class MercadoPagoConfig
     public static string $PRODUCT_ID = "BC32A7RU643001OI3940";
 
     /** @var string Class constant for local runtime enviroment */
-    const LOCAL = 'local';
+    public const LOCAL = 'local';
 
     /** @var string Class constant for server runtime enviroment */
-    const SERVER = 'server';
+    public const SERVER = 'server';
 
     /** @var string Actual enviroment the user is running at. Default is SERVER */
     private static string $runtime_enviroment = self::SERVER;