diff --git a/README.md b/README.md
index d5d7294..896a01a 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,7 @@ const { websocket } = bunAdapter({ onMessage: console.log });
 
 Bun.serve({
   port: 3000,
+  websocket,
   fetch(req, server) {
     if (server.upgrade(req)) {
       return;
@@ -87,7 +88,6 @@ Bun.serve({
       { headers: { "content-type": "text/html" } },
     );
   },
-  websocket,
 });
 ```
 
diff --git a/package.json b/package.json
index e74cd86..bb1968c 100644
--- a/package.json
+++ b/package.json
@@ -59,6 +59,7 @@
     "@types/web": "^0.0.135",
     "@types/ws": "^8.5.10",
     "@vitest/coverage-v8": "^1.2.2",
+    "bun-types": "^1.0.25",
     "changelogen": "^0.5.5",
     "eslint": "^8.56.0",
     "eslint-config-unjs": "^0.2.1",
diff --git a/playground/bun.ts b/playground/bun.ts
index 8aa8142..e8b7d58 100644
--- a/playground/bun.ts
+++ b/playground/bun.ts
@@ -1,5 +1,7 @@
 // You can run this demo using `bun --bun ./bun.ts` or `npm run play:bun` in repo
 
+/// <reference types="bun-types" />
+
 import bunAdapter from "../src/adapters/bun";
 import { createDemo, getIndexHTMLURL } from "./_common";
 
@@ -7,6 +9,7 @@ const adapter = createDemo(bunAdapter);
 
 Bun.serve({
   port: 3001,
+  websocket: adapter.websocket,
   fetch(req, server) {
     if (server.upgrade(req)) {
       return;
@@ -15,5 +18,4 @@ Bun.serve({
       headers: { "Content-Type": "text/html" },
     });
   },
-  websocket: adapter.websocket,
 });
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 74532a1..5ee581a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -20,6 +20,9 @@ devDependencies:
   '@vitest/coverage-v8':
     specifier: ^1.2.2
     version: 1.2.2(vitest@1.2.2)
+  bun-types:
+    specifier: ^1.0.25
+    version: 1.0.25
   changelogen:
     specifier: ^0.5.5
     version: 0.5.5
@@ -1571,6 +1574,14 @@ packages:
       semver: 7.5.4
     dev: true
 
+  /bun-types@1.0.25:
+    resolution: {integrity: sha512-9lxeUR/OJsvlZH4GOWteiAdx7ikrSxCUX7Rr0JJux+DrR3LejouVLxIZnTeQ3UPAZovvSgKivWeHPJ2wlo7/Kg==}
+    dependencies:
+      '@types/node': 20.11.10
+      '@types/ws': 8.5.10
+      undici-types: 5.26.5
+    dev: true
+
   /bundle-name@3.0.0:
     resolution: {integrity: sha512-PKA4BeSvBpQKQ8iPOGCSiell+N8P+Tf1DlwqmYhpe2gAhKPHn8EYOxVT+ShuGmhg8lN8XiSlS80yiExKXrURlw==}
     engines: {node: '>=12'}
diff --git a/src/adapters/bun.ts b/src/adapters/bun.ts
index af9af8f..fb31e70 100644
--- a/src/adapters/bun.ts
+++ b/src/adapters/bun.ts
@@ -1,8 +1,9 @@
 // https://bun.sh/docs/api/websockets
 
-import type { BunWSOptions, BunServerWebSocket } from "../../types/bun";
+/// <reference types="bun-types" />
+
 import { WebSocketMessage } from "../message";
-import { WebSocketError } from "../error";
+// import { WebSocketError } from "../error";
 import { WebSocketPeer } from "../peer";
 import { defineWebSocketAdapter } from "../adapter";
 
@@ -10,8 +11,15 @@ export const WebSocket = globalThis.WebSocket;
 
 export interface AdapterOptions {}
 
+type WebSocketHandler<T = unknown> = Extract<
+  Parameters<typeof Bun.serve<T>>[0],
+  { websocket: any }
+>["websocket"];
+
+type ServerWebSocket = Parameters<WebSocketHandler["message"]>[0];
+
 export interface Adapter {
-  websocket: BunWSOptions;
+  websocket: WebSocketHandler;
 }
 
 export default defineWebSocketAdapter<Adapter, AdapterOptions>(
@@ -33,11 +41,12 @@ export default defineWebSocketAdapter<Adapter, AdapterOptions>(
           const peer = new BunWebSocketPeer(ws);
           handler.onClose?.(peer, 0, "");
         },
-        error: (ws, error) => {
-          handler.onEvent?.("bun:error", ws, error);
-          const peer = new BunWebSocketPeer(ws);
-          handler.onError?.(peer, new WebSocketError(error));
-        },
+        // TODO
+        // error: (ws, error) => {
+        //   handler.onEvent?.("bun:error", ws, error);
+        //   const peer = new BunWebSocketPeer(ws);
+        //   handler.onError?.(peer, new WebSocketError(error));
+        // },
         drain: (ws) => {
           handler.onEvent?.("bun:drain", ws);
         },
@@ -47,7 +56,7 @@ export default defineWebSocketAdapter<Adapter, AdapterOptions>(
 );
 
 class BunWebSocketPeer extends WebSocketPeer {
-  constructor(private _ws: BunServerWebSocket) {
+  constructor(private _ws: ServerWebSocket) {
     super();
   }
 
diff --git a/types/bun.ts b/types/bun.ts
deleted file mode 100644
index 7b33d19..0000000
--- a/types/bun.ts
+++ /dev/null
@@ -1,60 +0,0 @@
-// Reference: https://bun.sh/docs/api/websockets
-
-export interface BunWSOptions {
-  message: (
-    ws: BunServerWebSocket,
-    message: string | ArrayBuffer | Uint8Array,
-  ) => void;
-  open?: (ws: BunServerWebSocket) => void;
-  close?: (ws: BunServerWebSocket) => void;
-  error?: (ws: BunServerWebSocket, error: Error) => void;
-  drain?: (ws: BunServerWebSocket) => void;
-  perMessageDeflate?:
-    | boolean
-    | {
-        compress?: boolean | BunWSCompressor;
-        decompress?: boolean | BunWSCompressor;
-      };
-}
-
-type BunWSCompressor =
-  | `"disable"`
-  | `"shared"`
-  | `"dedicated"`
-  | `"3KB"`
-  | `"4KB"`
-  | `"8KB"`
-  | `"16KB"`
-  | `"32KB"`
-  | `"64KB"`
-  | `"128KB"`
-  | `"256KB"`;
-
-export interface BunWSServer {
-  pendingWebsockets: number;
-  publish(
-    topic: string,
-    data: string | ArrayBufferView | ArrayBuffer,
-    compress?: boolean,
-  ): number;
-  upgrade(
-    req: Request,
-    options?: {
-      headers?: HeadersInit;
-      data?: any;
-    },
-  ): boolean;
-}
-
-export interface BunServerWebSocket {
-  readonly data: any;
-  readonly readyState: number;
-  readonly remoteAddress: string;
-  send(message: string | ArrayBuffer | Uint8Array, compress?: boolean): number;
-  close(code?: number, reason?: string): void;
-  subscribe(topic: string): void;
-  unsubscribe(topic: string): void;
-  publish(topic: string, message: string | ArrayBuffer | Uint8Array): void;
-  isSubscribed(topic: string): boolean;
-  cork(cb: (ws: BunServerWebSocket) => void): void;
-}