diff --git a/lib/firefly.ts b/lib/firefly.ts
index 7a80359..552f58a 100644
--- a/lib/firefly.ts
+++ b/lib/firefly.ts
@@ -1,5 +1,7 @@
 import { Stream, Readable } from 'stream';
+import * as http from 'http';
 import * as FormData from 'form-data';
+import * as WebSocket from 'ws';
 import {
   FireFlyStatusResponse,
   FireFlyPrivateSendOptions,
@@ -549,6 +551,7 @@ export default class FireFly extends HttpBase {
   listen(
     subscriptions: string | string[] | FireFlySubscriptionBase,
     callback: FireFlyWebSocketCallback,
+    socketOptions?: WebSocket.ClientOptions | http.ClientRequestArgs,
   ): FireFlyWebSocket {
     const options: FireFlyWebSocketOptions = {
       host: this.options.websocket.host,
@@ -559,6 +562,7 @@ export default class FireFly extends HttpBase {
       autoack: false,
       reconnectDelay: this.options.websocket.reconnectDelay,
       heartbeatInterval: this.options.websocket.heartbeatInterval,
+      socketOptions: socketOptions,
     };
 
     const handler: FireFlyWebSocketCallback = (socket, event) => {
diff --git a/lib/interfaces.ts b/lib/interfaces.ts
index ae68ceb..80b003a 100644
--- a/lib/interfaces.ts
+++ b/lib/interfaces.ts
@@ -1,4 +1,6 @@
+import * as http from 'http';
 import { AxiosRequestConfig } from 'axios';
+import * as WebSocket from 'ws';
 import { operations } from './schema';
 
 /**
@@ -61,6 +63,7 @@ export interface FireFlyWebSocketOptions {
   autoack: boolean;
   reconnectDelay: number;
   heartbeatInterval: number;
+  socketOptions?: WebSocket.ClientOptions | http.ClientRequestArgs;
 }
 
 // Namespace
diff --git a/lib/websocket.ts b/lib/websocket.ts
index bb1c3c3..e3c8ed8 100644
--- a/lib/websocket.ts
+++ b/lib/websocket.ts
@@ -57,6 +57,7 @@ export class FireFlyWebSocket {
         ? `${this.options.username}:${this.options.password}`
         : undefined;
     const socket = (this.socket = new WebSocket(url, {
+      ...this.options.socketOptions,
       auth,
       handshakeTimeout: this.options.heartbeatInterval,
     }));
diff --git a/package-lock.json b/package-lock.json
index 407c77e..4d7988c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@hyperledger/firefly-sdk",
-  "version": "1.2.1",
+  "version": "1.2.4",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@hyperledger/firefly-sdk",
-      "version": "1.2.1",
+      "version": "1.2.4",
       "license": "Apache-2.0",
       "dependencies": {
         "axios": "^0.26.1",
diff --git a/package.json b/package.json
index a85316d..e36a11c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperledger/firefly-sdk",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "description": "Client SDK for Hyperledger FireFly",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",