diff --git a/package.json b/package.json
index 0e758e0..81d1e23 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "dev": "nodemon",
     "watch": "babel-node src/main.ts --extensions \".ts\"",
     "clean:dist": "rm -rf ./dist",
-    "build": "pnpm clean:dist && rollup -c",
+    "build": "pnpm clean:dist && rollup --c --configPlugin @rollup/plugin-typescript",
     "tsbuild": "pnpm clean:dist && tsc && tsc-alias",
     "start": "pm2 start ecosystem.config.js --env production",
     "restart": "pm2 restart ecosystem.config.js --env production",
@@ -44,6 +44,7 @@
     "@rollup/plugin-commonjs": "^21.0.1",
     "@rollup/plugin-json": "^4.1.0",
     "@rollup/plugin-node-resolve": "^13.1.1",
+    "@rollup/plugin-typescript": "^8.3.0",
     "@types/koa": "^2.13.4",
     "@types/koa-bodyparser": "4.3.4",
     "@types/koa-router": "^7.4.4",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 1b75e79..6e0daf0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -10,6 +10,7 @@ specifiers:
   '@rollup/plugin-commonjs': ^21.0.1
   '@rollup/plugin-json': ^4.1.0
   '@rollup/plugin-node-resolve': ^13.1.1
+  '@rollup/plugin-typescript': ^8.3.0
   '@types/koa': ^2.13.4
   '@types/koa-bodyparser': 4.3.4
   '@types/koa-router': ^7.4.4
@@ -55,6 +56,7 @@ devDependencies:
   '@rollup/plugin-commonjs': 21.0.1_rollup@2.61.1
   '@rollup/plugin-json': 4.1.0_rollup@2.61.1
   '@rollup/plugin-node-resolve': 13.1.1_rollup@2.61.1
+  '@rollup/plugin-typescript': 8.3.0_3bb347879280457c0420527ae9f527b5
   '@types/koa': 2.13.4
   '@types/koa-bodyparser': 4.3.4
   '@types/koa-router': 7.4.4
@@ -1509,6 +1511,21 @@ packages:
       rollup: 2.61.1
     dev: true
 
+  /@rollup/plugin-typescript/8.3.0_3bb347879280457c0420527ae9f527b5:
+    resolution: {integrity: sha512-I5FpSvLbtAdwJ+naznv+B4sjXZUcIvLLceYpITAn7wAP8W0wqc5noLdGIp9HGVntNhRWXctwPYrSSFQxtl0FPA==}
+    engines: {node: '>=8.0.0'}
+    peerDependencies:
+      rollup: ^2.14.0
+      tslib: '*'
+      typescript: '>=3.7.0'
+    dependencies:
+      '@rollup/pluginutils': 3.1.0_rollup@2.61.1
+      resolve: 1.20.0
+      rollup: 2.61.1
+      tslib: 2.3.1
+      typescript: 4.5.4
+    dev: true
+
   /@rollup/pluginutils/3.1.0_rollup@2.61.1:
     resolution: {integrity: sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==}
     engines: {node: '>= 8.0.0'}
diff --git a/rollup.config.ts b/rollup.config.ts
index a414e29..c2edf11 100644
--- a/rollup.config.ts
+++ b/rollup.config.ts
@@ -1,3 +1,4 @@
+import { RollupOptions, ModuleFormat, OutputOptions } from 'rollup'
 import { nodeResolve } from '@rollup/plugin-node-resolve'
 import { getBabelOutputPlugin } from '@rollup/plugin-babel'
 import ts from 'rollup-plugin-typescript2'
@@ -8,13 +9,13 @@ import path from 'path'
 const { getPresetsEnv } = require('./babel.presets')
 const pkg = require(path.resolve('package.json'))
 
-const formats = [
+const formats: Array<ModuleFormat> = [
   'cjs',
   'esm'
 ]
-const output = formats.map((format) => {
+const output: Array<OutputOptions> = formats.map((format) => {
   const fileName = `bundle.${format}.js`
-  return {
+  const result: OutputOptions = {
     file: `dist/${fileName}`,
     format,
     banner: `
@@ -27,9 +28,10 @@ const output = formats.map((format) => {
     `,
     sourcemap: false
   }
+  return result
 })
 
-export default {
+const rollupConfig: RollupOptions = {
   input: 'src/main.ts',
   output,
   external: [
@@ -57,3 +59,5 @@ export default {
     })
   ]
 }
+
+export default rollupConfig
diff --git a/src/services/home.ts b/src/services/home.ts
index 3bca8a4..79f3ec6 100644
--- a/src/services/home.ts
+++ b/src/services/home.ts
@@ -2,7 +2,7 @@ export default class HomeService {
   hello = (): Promise<unknown> => {
     return new Promise(resolve => resolve({
       say: {
-        hello: 'Hello, Koa + TypeScript',
+        hello: 'Hello, Puppeteer Server',
         date: new Date()
       }
     }))
diff --git a/tsconfig.json b/tsconfig.json
index ed1e888..e1ba20f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "module": "commonjs",
+    "module": "esnext",
     "moduleResolution": "node",
     "declaration": false,
     "resolveJsonModule": true,
@@ -17,7 +17,7 @@
     "sourceMap": false,
     "outDir": "./dist",
     "baseUrl": "./",
-    "lib": ["dom", "ES2020"],
+    "lib": ["dom", "esnext"],
     "types": ["puppeteer", "node"],
     "paths": {
       "@/*": [
@@ -27,7 +27,6 @@
   },
   "exclude": [
     "dist",
-    "node_modules",
-    "rollup.config.ts"
+    "node_modules"
   ]
 }