diff --git a/src/types.ts b/src/types.ts
index b23c7719..62420f04 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -105,7 +105,7 @@ export interface TransferPeerPath {
     address?: string;
 }
 
-interface DestinationTransferPeerPath {
+export interface DestinationTransferPeerPath {
     type: PeerType;
     id?: string;
     virtualId?: string;
@@ -113,7 +113,7 @@ interface DestinationTransferPeerPath {
     oneTimeAddress?: IOneTimeAddress;
 }
 
-interface IOneTimeAddress {
+export interface IOneTimeAddress {
     address: string;
     tag?: string;
 }
@@ -181,6 +181,7 @@ export interface TransactionArguments {
     destinations?: TransactionDestination[];
     replaceTxByHash?: string;
     externalTxId?: string;
+    treatAsGrossAmount?: boolean;
 }
 
 export enum FeeLevel {