diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index be34468..8e8e4ca 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -34,9 +34,10 @@ public function getConfigTree()
                     ->scalarNode('signature')->isRequired()->cannotBeEmpty()->end()
                     ->scalarNode('return_url')->defaultNull()->end()
                     ->scalarNode('cancel_url')->defaultNull()->end()
+                    ->scalarNode('notify_url')->defaultNull()->end()
                     ->booleanNode('debug')->defaultValue('%kernel.debug%')->end()
                 ->end()
             ->end()
             ->buildTree();
     }
-}
\ No newline at end of file
+}
diff --git a/DependencyInjection/JMSPaymentPaypalExtension.php b/DependencyInjection/JMSPaymentPaypalExtension.php
index 21cbee0..55a2453 100644
--- a/DependencyInjection/JMSPaymentPaypalExtension.php
+++ b/DependencyInjection/JMSPaymentPaypalExtension.php
@@ -40,6 +40,7 @@ public function load(array $configs, ContainerBuilder $container)
         $container->setParameter('payment.paypal.signature', $config['signature']);
         $container->setParameter('payment.paypal.express_checkout.return_url', $config['return_url']);
         $container->setParameter('payment.paypal.express_checkout.cancel_url', $config['cancel_url']);
+        $container->setParameter('payment.paypal.express_checkout.notify_url', $config['notify_url']);
         $container->setParameter('payment.paypal.debug', $config['debug']);
     }
-}
\ No newline at end of file
+}
diff --git a/Plugin/ExpressCheckoutPlugin.php b/Plugin/ExpressCheckoutPlugin.php
index a4b2528..692914f 100644
--- a/Plugin/ExpressCheckoutPlugin.php
+++ b/Plugin/ExpressCheckoutPlugin.php
@@ -42,6 +42,11 @@ class ExpressCheckoutPlugin extends AbstractPlugin
      */
     protected $cancelUrl;
 
+    /**
+     * @var string
+     */
+    protected $notifyUrl;
+
     /**
      * @var \JMS\Payment\PaypalBundle\Client\Client
      */
@@ -51,12 +56,14 @@ class ExpressCheckoutPlugin extends AbstractPlugin
      * @param string $returnUrl
      * @param string $cancelUrl
      * @param \JMS\Payment\PaypalBundle\Client\Client $client
+     * @param string $notifyUrl
      */
-    public function __construct($returnUrl, $cancelUrl, Client $client)
+    public function __construct($returnUrl, $cancelUrl, Client $client, $notifyUrl = null)
     {
         $this->client = $client;
         $this->returnUrl = $returnUrl;
         $this->cancelUrl = $cancelUrl;
+        $this->notifyUrl = $notifyUrl;
     }
 
     public function approve(FinancialTransactionInterface $transaction, $retry)
@@ -188,12 +195,20 @@ protected function createCheckoutBillingAgreement(FinancialTransactionInterface
         // complete the transaction
         $data->set('paypal_payer_id', $details->body->get('PAYERID'));
 
+        $optionalParameters = array(
+            'PAYMENTREQUEST_0_CURRENCYCODE' => $transaction->getPayment()->getPaymentInstruction()->getCurrency(),
+        );
+
+        if (null !== $notifyUrl = $this->getNotifyUrl($data)) {
+            $optionalParameters['PAYMENTREQUEST_0_NOTIFYURL'] = $notifyUrl;
+        }
+
         $response = $this->client->requestDoExpressCheckoutPayment(
             $data->get('express_checkout_token'),
             $transaction->getRequestedAmount(),
             $paymentAction,
             $details->body->get('PAYERID'),
-            array('PAYMENTREQUEST_0_CURRENCYCODE' => $transaction->getPayment()->getPaymentInstruction()->getCurrency())
+            $optionalParameters
         );
         $this->throwUnlessSuccessResponse($response, $transaction);
 
@@ -303,4 +318,14 @@ protected function getCancelUrl(ExtendedDataInterface $data)
 
         throw new \RuntimeException('You must configure a cancel url.');
     }
-}
\ No newline at end of file
+
+    protected function getNotifyUrl(ExtendedDataInterface $data)
+    {
+        if ($data->has('notify_url')) {
+            return $data->get('notify_url');
+        }
+        else if (0 !== strlen($this->notifyUrl)) {
+            return $this->notifyUrl;
+        }
+    }
+}
diff --git a/Resources/config/services.xml b/Resources/config/services.xml
index 48cf053..79219a5 100644
--- a/Resources/config/services.xml
+++ b/Resources/config/services.xml
@@ -8,6 +8,7 @@
         <parameter key="payment.plugin.paypal_express_checkout.class">JMS\Payment\PaypalBundle\Plugin\ExpressCheckoutPlugin</parameter>
         <parameter key="payment.paypal.express_checkout.return_url"></parameter>
         <parameter key="payment.paypal.express_checkout.cancel_url"></parameter>
+        <parameter key="payment.paypal.express_checkout.notify_url"></parameter>
 
         <parameter key="payment.paypal.authentication_strategy.token.class">JMS\Payment\PaypalBundle\Client\Authentication\TokenAuthenticationStrategy</parameter>
         <parameter key="payment.paypal.username"></parameter>
@@ -32,6 +33,7 @@
             <argument>%payment.paypal.express_checkout.return_url%</argument>
             <argument>%payment.paypal.express_checkout.cancel_url%</argument>
             <argument type="service" id="payment.paypal.client" />
+            <argument>%payment.paypal.express_checkout.notify_url%</argument>
             <tag name="payment.plugin" />
         </service>