diff --git a/lib/Paymentwall/Pingback.php b/lib/Paymentwall/Pingback.php
index 21d35cb..1bbaec8 100644
--- a/lib/Paymentwall/Pingback.php
+++ b/lib/Paymentwall/Pingback.php
@@ -10,6 +10,8 @@ class Paymentwall_Pingback extends Paymentwall_Instance
 	const PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED = 201;
 	const PINGBACK_TYPE_RISK_REVIEWED_DECLINED = 202;
 
+	const PINGBACK_TYPE_RISK_AUTHORIZATION_VOIDED = 203;
+
 	const PINGBACK_TYPE_SUBSCRIPTION_CANCELLATION = 12;
 	const PINGBACK_TYPE_SUBSCRIPTION_EXPIRED = 13;
 	const PINGBACK_TYPE_SUBSCRIPTION_PAYMENT_FAILED = 14;