diff --git a/wallet/v1/msg.proto b/wallet/v1/msg.proto
index a66985a..510fe69 100644
--- a/wallet/v1/msg.proto
+++ b/wallet/v1/msg.proto
@@ -367,6 +367,7 @@ message SaleGetTokenRes {
   int64 total_price = 3;
   double amount = 4;
   string asset = 5;
+  optional string discount_code = 6;
 }
 
 message SaleConfirmReq {
@@ -377,6 +378,7 @@ message SaleConfirmReq {
   string card_holder_info = 5;
   string card_holder_pan = 6;
   string final_amount = 7;
+  optional string discount_code = 8;
 }
 
 message SaleConfirmRes {
@@ -390,6 +392,8 @@ message SaleManualReq {
   string paid_at = 4;
   string rrn = 5;
   string national_id = 6;
+  optional string discount_code = 7;
+
 }
 
 /*