diff --git a/protob/messages-ripple.proto b/protob/messages-ripple.proto
index 5d13c909e..ce31fbf0b 100644
--- a/protob/messages-ripple.proto
+++ b/protob/messages-ripple.proto
@@ -45,6 +45,7 @@ message RippleSignTx {
 	message RipplePayment {
 		optional uint64 amount = 1;				// only XRP is supported at the moment so this an integer
 		optional string destination = 2;		// destination account address
+		optional uint32 destination_tag = 3;	// destination tag to identify payments
 	}
 }