diff --git a/modules/gateways/bitpaycheckout.php b/modules/gateways/bitpaycheckout.php
index 84806d8..bc133eb 100644
--- a/modules/gateways/bitpaycheckout.php
+++ b/modules/gateways/bitpaycheckout.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * BitPay Checkout 3.1.0.0
+ * BitPay Checkout 3.1.1.0
  *
  * Within the module itself, all functions must be prefixed with the module
  * filename, followed by an underscore, and then the function name. For this
@@ -54,7 +54,7 @@ function bitpaycheckout_MetaData()
 {
     return array(
         'DisplayName' => 'BitPay_Checkout_WHMCS',
-        'APIVersion' => '3.1.0.0', // Use API Version 1.1
+        'APIVersion' => '3.1.1.0', // Use API Version 1.1
         'DisableLocalCreditCardInput' => false,
         'TokenisedStorage' => false,
     );
diff --git a/modules/gateways/bitpaycheckout/bitpaycheckout.php b/modules/gateways/bitpaycheckout/bitpaycheckout.php
index 84806d8..bc133eb 100644
--- a/modules/gateways/bitpaycheckout/bitpaycheckout.php
+++ b/modules/gateways/bitpaycheckout/bitpaycheckout.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * BitPay Checkout 3.1.0.0
+ * BitPay Checkout 3.1.1.0
  *
  * Within the module itself, all functions must be prefixed with the module
  * filename, followed by an underscore, and then the function name. For this
@@ -54,7 +54,7 @@ function bitpaycheckout_MetaData()
 {
     return array(
         'DisplayName' => 'BitPay_Checkout_WHMCS',
-        'APIVersion' => '3.1.0.0', // Use API Version 1.1
+        'APIVersion' => '3.1.1.0', // Use API Version 1.1
         'DisableLocalCreditCardInput' => false,
         'TokenisedStorage' => false,
     );
diff --git a/modules/gateways/bitpaycheckout/bitpaycheckout_callback.php b/modules/gateways/bitpaycheckout/bitpaycheckout_callback.php
index cdd0ed8..e7c687d 100644
--- a/modules/gateways/bitpaycheckout/bitpaycheckout_callback.php
+++ b/modules/gateways/bitpaycheckout/bitpaycheckout_callback.php
@@ -1,7 +1,7 @@
 <?php
 
 /**
- * BitPay Checkout Callback 3.1.0.0
+ * BitPay Checkout Callback 3.1.1.0
  *
  * This file demonstrates how a payment gateway callback should be
  * handled within WHMCS.
diff --git a/modules/gateways/bitpaycheckout/bitpaycheckout_ipn.php b/modules/gateways/bitpaycheckout/bitpaycheckout_ipn.php
index ef7348d..3b3299a 100644
--- a/modules/gateways/bitpaycheckout/bitpaycheckout_ipn.php
+++ b/modules/gateways/bitpaycheckout/bitpaycheckout_ipn.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * BitPay Checkout IPN 3.1.0.0
+ * BitPay Checkout IPN 3.1.1.0
  *
  * This file demonstrates how a payment gateway callback should be
  * handled within WHMCS.