diff --git a/package-lock.json b/package-lock.json
index d6c13bc..932979a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.21.0-rc0",
+  "version": "0.21.0-rc1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.21.0-rc0",
+      "version": "0.21.0-rc1",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
diff --git a/package.json b/package.json
index 1801ee8..1f56aac 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.21.0-rc0",
+  "version": "0.21.0-rc1",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/services/Aggregator/ws/index.ts b/src/services/Aggregator/ws/index.ts
index b07f673..e03b6f1 100644
--- a/src/services/Aggregator/ws/index.ts
+++ b/src/services/Aggregator/ws/index.ts
@@ -43,6 +43,8 @@ type SwapInfoSubscriptionPayload = {
   es?: string // exchange list of all cex or all pools (ORION_POOL, UNISWAP, PANCAKESWAP etc)
   e?: boolean // is amount IN? Value `false` means a = amount OUT, `true` if omitted
   is?: boolean // instant settlement
+  sc?: string // CS sourceChain
+  tc?: string // CS targetChain
 }
 
 type BrokerTradableAtomicSwapBalanceSubscription = {