lib/active_merchant/billing/gateways/sage_pay.rb in activemerchant-1.47.0 vs lib/active_merchant/billing/gateways/sage_pay.rb in activemerchant-1.48.0

@@ -352,10 +352,10 @@
 
       def post_data(action, parameters = {})
         parameters.update(
           :Vendor => @options[:login],
           :TxType => TRANSACTIONS[action],
-          :VPSProtocol => "3.00"
+          :VPSProtocol => @options.fetch(:protocol_version, '3.00')
         )
 
         if(application_id && (application_id != Gateway.application_id))
           parameters.update(:ReferrerID => application_id)
         end