diff --git a/package.json b/package.json
index bbf2e8b2..189df85c 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
     "supertest": "^6.1.5",
     "ts-jest": "^27.0.4",
     "typescript": "^4.3.5",
-    "ws": "^7.4.6"
+    "ws": "^8.1.0"
   },
   "dependencies": {
     "@types/http-proxy": "^1.17.5",
diff --git a/test/e2e/websocket.spec.ts b/test/e2e/websocket.spec.ts
index d2e674ee..bb80b166 100644
--- a/test/e2e/websocket.spec.ts
+++ b/test/e2e/websocket.spec.ts
@@ -25,7 +25,8 @@ describe('E2E WebSocket proxy', () => {
     wss = new WebSocketServer({ port: WS_SERVER_PORT });
 
     wss.on('connection', (websocket) => {
-      websocket.on('message', (message) => {
+      websocket.on('message', (data, isBinary) => {
+        const message = isBinary ? data : data.toString();
         websocket.send(message); // echo received message
       });
     });
@@ -66,7 +67,8 @@ describe('E2E WebSocket proxy', () => {
     });
 
     it('should proxy to path', (done) => {
-      ws.on('message', (message) => {
+      ws.on('message', (data, isBinary) => {
+        const message = isBinary ? data : data.toString();
         expect(message).toBe('foobar');
         done();
       });
@@ -84,7 +86,8 @@ describe('E2E WebSocket proxy', () => {
     });
 
     it('should proxy to path', (done) => {
-      ws.on('message', (message) => {
+      ws.on('message', (data, isBinary) => {
+        const message = isBinary ? data : data.toString();
         expect(message).toBe('foobar');
         done();
       });
@@ -109,7 +112,8 @@ describe('E2E WebSocket proxy', () => {
     });
 
     it('should proxy to path', (done) => {
-      ws.on('message', (message) => {
+      ws.on('message', (data, isBinary) => {
+        const message = isBinary ? data : data.toString();
         expect(message).toBe('foobar');
         done();
       });
@@ -136,7 +140,8 @@ describe('E2E WebSocket proxy', () => {
     });
 
     it('should proxy to path', (done) => {
-      ws.on('message', (message) => {
+      ws.on('message', (data, isBinary) => {
+        const message = isBinary ? data : data.toString();
         expect(message).toBe('foobar');
         done();
       });
diff --git a/yarn.lock b/yarn.lock
index 1ccf1e53..16951883 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5870,6 +5870,11 @@ ws@^7.3.1, ws@^7.4.5, ws@^7.4.6, ws@~7.4.2:
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.6.tgz#5654ca8ecdeee47c33a9a4bf6d28e2be2980377c"
   integrity sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==
 
+ws@^8.1.0:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-8.1.0.tgz#75e5ec608f66d3d3934ec6dbc4ebc8a34a68638c"
+  integrity sha512-0UWlCD2s3RSclw8FN+D0zDTUyMO+1kHwJQQJzkgUh16S8d3NYON0AKCEQPffE0ez4JyRFu76QDA9KR5bOG/7jw==
+
 xml-name-validator@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"