diff --git a/index.d.ts b/index.d.ts
deleted file mode 100644
index e8bbadf..0000000
--- a/index.d.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-/// <reference types='node' />
-
-import { FastifyPluginCallback, preHandlerHookHandler } from 'fastify';
-
-import {
-  FastifyReplyFromOptions,
-  FastifyReplyFromHooks,
-} from '@fastify/reply-from';
-
-import { ClientOptions, ServerOptions } from 'ws';
-
-export interface FastifyHttpProxyOptions extends FastifyReplyFromOptions {
-  upstream: string;
-  prefix?: string;
-  rewritePrefix?: string;
-  proxyPayloads?: boolean;
-  preHandler?: preHandlerHookHandler;
-  beforeHandler?: preHandlerHookHandler;
-  config?: Object;
-  replyOptions?: FastifyReplyFromHooks;
-  websocket?: boolean;
-  wsClientOptions?: ClientOptions;
-  wsServerOptions?: ServerOptions;
-  httpMethods?: string[];
-  constraints?: { [name: string]: any };
-}
-
-export const fastifyHttpProxy: FastifyPluginCallback<FastifyHttpProxyOptions>;
-export default fastifyHttpProxy;
diff --git a/index.js b/index.js
index 99f9da8..f10198d 100644
--- a/index.js
+++ b/index.js
@@ -185,7 +185,7 @@ function generateRewritePrefix (prefix = '', opts) {
   return rewritePrefix
 }
 
-async function httpProxy (fastify, opts) {
+async function fastifyHttpProxy (fastify, opts) {
   if (!opts.upstream && !(opts.upstream === '' && opts.replyOptions && typeof opts.replyOptions.getUpstream === 'function')) {
     throw new Error('upstream must be specified')
   }
@@ -261,11 +261,11 @@ async function httpProxy (fastify, opts) {
   }
 }
 
-httpProxy[Symbol.for('plugin-meta')] = {
+fastifyHttpProxy[Symbol.for('plugin-meta')] = {
   fastify: '4.x',
   name: '@fastify/http-proxy'
 }
 
-module.exports = httpProxy
-module.exports.default = httpProxy
-module.exports.fastifyHttpProxy = httpProxy
+module.exports = fastifyHttpProxy
+module.exports.default = fastifyHttpProxy
+module.exports.fastifyHttpProxy = fastifyHttpProxy
diff --git a/package.json b/package.json
index 9d477c5..1ea3777 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "8.2.3",
   "description": "proxy http requests, for Fastify",
   "main": "index.js",
-  "types": "index.d.ts",
+  "types": "types/index.d.ts",
   "scripts": {
     "lint": "standard | snazzy",
     "lint:fix": "standard --fix | snazzy",
diff --git a/types/index.d.ts b/types/index.d.ts
new file mode 100644
index 0000000..631446b
--- /dev/null
+++ b/types/index.d.ts
@@ -0,0 +1,36 @@
+/// <reference types='node' />
+
+import { FastifyPluginCallback, preHandlerHookHandler } from 'fastify';
+
+import {
+  FastifyReplyFromOptions,
+  FastifyReplyFromHooks,
+} from '@fastify/reply-from';
+
+import { ClientOptions, ServerOptions } from 'ws';
+
+type FastifyHttpProxy = FastifyPluginCallback<fastifyHttpProxy.FastifyHttpProxyOptions>;
+
+declare namespace fastifyHttpProxy {
+  export interface FastifyHttpProxyOptions extends FastifyReplyFromOptions {
+    upstream: string;
+    prefix?: string;
+    rewritePrefix?: string;
+    proxyPayloads?: boolean;
+    preHandler?: preHandlerHookHandler;
+    beforeHandler?: preHandlerHookHandler;
+    config?: Object;
+    replyOptions?: FastifyReplyFromHooks;
+    websocket?: boolean;
+    wsClientOptions?: ClientOptions;
+    wsServerOptions?: ServerOptions;
+    httpMethods?: string[];
+    constraints?: { [name: string]: any };
+  }
+  
+  export const fastifyHttpProxy: FastifyHttpProxy
+  export { fastifyHttpProxy as default }
+}
+
+declare function fastifyHttpProxy(...params: Parameters<FastifyHttpProxy>): ReturnType<FastifyHttpProxy>
+export = fastifyHttpProxy
diff --git a/test/types/index.test-d.ts b/types/index.test-d.ts
similarity index 97%
rename from test/types/index.test-d.ts
rename to types/index.test-d.ts
index 99ed637..0e87337 100644
--- a/test/types/index.test-d.ts
+++ b/types/index.test-d.ts
@@ -1,6 +1,6 @@
 import fastify, { RawReplyDefaultExpression, RawRequestDefaultExpression } from 'fastify';
 import { expectError, expectType } from 'tsd';
-import fastifyHttpProxy from '../..';
+import fastifyHttpProxy from '..';
 
 const app = fastify();