diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d802186d..a3f00c4a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
   ### Removed
  -->
 
+## [2.15.3] - 2023-10-16
+
+### Fixed
+
+- replace legacy `sendAsync` with `request` ([#373](https://github.com/casper-ecosystem/casper-js-sdk/pull/373))
+
+[2.15.3]: https://github.com/casper-ecosystem/casper-js-sdk/compare/2.15.2...2.15.3
+
 ## [2.15.2] - 2023-8-4
 
 ### Fixed
diff --git a/e2e/nctl/Provider.setup.ts b/e2e/nctl/Provider.setup.ts
index 2d24033c3..ceec70bcb 100644
--- a/e2e/nctl/Provider.setup.ts
+++ b/e2e/nctl/Provider.setup.ts
@@ -93,7 +93,7 @@ const processDeploy = async (
     req.params = DeployUtil.deployToJson(signedDeploy);
     //   const jrpcResult = await sendRpcRequestToChain(req, rpcTarget);
     const jrpcResult = { deploy_hash: '0x123', rpcTarget };
-    return jrpcResult
+    return jrpcResult;
   }
   throw new Error('Failed to parse deploy');
 };
@@ -107,7 +107,7 @@ export class MockProvider {
     this.client = new CasperClient(rpcTarget);
   }
 
-  async sendAsync(req: JRPCRequest<unknown>): Promise<any> {
+  async request(req: JRPCRequest<unknown>): Promise<any> {
     // we are intercepting 'account_put_deploy' (ie. signing the deploy and then submitting the signed deploy
     // to blockchain)
     // for rest of rpc calls we are simply sending rpc call to blockchain and returning the result.
@@ -116,13 +116,17 @@ export class MockProvider {
     } else {
       try {
         const jrpcResult = await sendRpcRequestToChain(req, this.rpcTarget);
-        return jrpcResult
+        return jrpcResult;
       } catch (error) {
         throw error;
       }
     }
   }
 
+  async sendAsync(req: JRPCRequest<unknown>): Promise<any> {
+    return this.request(req);
+  }
+
   // currently we only use sendAsync in provider transport, so we live it unimplemented here.
   send(_: JRPCRequest<unknown>, __: SendCallBack<any>): void {
     return;
diff --git a/package-lock.json b/package-lock.json
index c139e1e40..c42b25a74 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "casper-js-sdk",
-  "version": "2.15.1",
+  "version": "2.15.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "casper-js-sdk",
-      "version": "2.15.1",
+      "version": "2.15.3",
       "license": "Apache 2.0",
       "dependencies": {
         "@ethersproject/bignumber": "^5.0.8",
diff --git a/package.json b/package.json
index 6eb5f83c6..dc7696979 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "casper-js-sdk",
-  "version": "2.15.2",
+  "version": "2.15.3",
   "license": "Apache 2.0",
   "description": "SDK to interact with the Casper blockchain",
   "homepage": "https://github.com/casper-ecosystem/casper-js-sdk#README.md",
diff --git a/src/services/ProviderTransport.ts b/src/services/ProviderTransport.ts
index 8087ab7b1..b5eff481c 100644
--- a/src/services/ProviderTransport.ts
+++ b/src/services/ProviderTransport.ts
@@ -27,10 +27,20 @@ export interface JRPCResponse<T> extends JRPCBase {
 }
 
 export type SendCallBack<U> = (err: any, providerRes: U) => void;
+export type Maybe<T> = T | Partial<T> | null | undefined;
+
+export interface RequestArguments<T> {
+  method: string;
+  params?: T;
+}
 
 export interface SafeEventEmitterProvider {
   sendAsync: <T, U>(req: JRPCRequest<T>) => Promise<U>;
-  send: <T, U>(req: JRPCRequest<T>, callback: SendCallBack<U>) => void;
+  send: <T, U>(
+    req: JRPCRequest<T>,
+    callback: SendCallBack<JRPCResponse<U>>
+  ) => void;
+  request: <T, U>(req: RequestArguments<T>) => Promise<Maybe<U>>;
 }
 
 class ProviderTransport extends Transport {
@@ -50,8 +60,8 @@ class ProviderTransport extends Transport {
     const notifications = getNotifications(data);
     const batch = getBatchRequests(data);
     try {
-      const result = await this.provider.sendAsync(
-        (data.request as IJSONRPCRequest) as JRPCRequest<any>
+      const result = await this.provider.request(
+        (data.request as IJSONRPCRequest) as RequestArguments<any>
       );
       const jsonrpcResponse = {
         id: data.request.id,