diff --git a/package-lock.json b/package-lock.json
index 49ae716..1841ffd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.23.0-rc5",
+  "version": "0.23.0-rc6",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.23.0-rc5",
+      "version": "0.23.0-rc6",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
diff --git a/src/crypt/signCrossChainOrder.ts b/src/crypt/signCrossChainOrder.ts
index 2225b57..57571af 100644
--- a/src/crypt/signCrossChainOrder.ts
+++ b/src/crypt/signCrossChainOrder.ts
@@ -10,10 +10,7 @@ import generateSecret from '../utils/generateSecret';
 import { getOrderHash } from './hashOrders';
 
 const DAY = 24 * 60 * 60 * 1000;
-// TODO: return LOCK_ORDER_EXPIRATION and remove MOCK_LOCK_ORDER_EXPIRATION
-// const LOCK_ORDER_EXPIRATION = 4 * DAY;
-const MOCK_LOCK_ORDER_EXPIRATION = 10 * 60 * 1000; // 10 mins
-
+const LOCK_ORDER_EXPIRATION = 4 * DAY;
 const DEFAULT_EXPIRATION = 29 * DAY;
 
 export type SignCrossChainOrderProps = {
@@ -47,7 +44,7 @@ export const signCrossChainOrder = async ({
 }: SignCrossChainOrderProps): Promise<SignedCrossChainOrder> => {
   const nonce = Date.now();
   const expiration = nonce + DEFAULT_EXPIRATION;
-  const lockOrderExpiration = nonce + MOCK_LOCK_ORDER_EXPIRATION;
+  const lockOrderExpiration = nonce + LOCK_ORDER_EXPIRATION;
 
   const order: Order = {
     senderAddress,