diff --git a/package-lock.json b/package-lock.json
index 7ee2598..0aad523 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.21.0-rc8",
+  "version": "0.21.0-rc9",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.21.0-rc8",
+      "version": "0.21.0-rc9",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
diff --git a/package.json b/package.json
index 9b775f9..cac53dc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.21.0-rc8",
+  "version": "0.21.0-rc9",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/services/Aggregator/index.ts b/src/services/Aggregator/index.ts
index d671782..d8bec97 100644
--- a/src/services/Aggregator/index.ts
+++ b/src/services/Aggregator/index.ts
@@ -263,6 +263,18 @@ class Aggregator {
 
     const url = new URL(`${this.apiUrl}/api/v1/cross-chain`);
 
+    const body = {
+      secretHash: signedLockOrder.secretHash,
+      user: signedLockOrder.user,
+      sender: signedLockOrder.sender,
+      expiration: signedLockOrder.expiration,
+      asset: signedLockOrder.asset,
+      amount: signedLockOrder.amount,
+      targetChainId: signedLockOrder.targetChainId,
+      sign: signedLockOrder.signature,
+      secret: signedLockOrder.secretHash,
+    }
+
     return fetchWithValidation(
       url.toString(),
       z.object({
@@ -278,7 +290,7 @@ class Aggregator {
       {
         headers,
         method: 'POST',
-        body: JSON.stringify({ ...signedLockOrder, sign: '' }), // TODO: remove field sign when api updated
+        body: JSON.stringify(body), // TODO: add field sign when api updated
       },
       errorSchema,
     );