diff --git a/src/init.js b/src/init.js
index 027b64d5..32dd6b82 100644
--- a/src/init.js
+++ b/src/init.js
@@ -2,8 +2,6 @@ const path = require('path')
 const fs = require('fs-extra')
 const originalPackage = require('../package.json')
 
-const targetProps = ['scripts', 'lint-staged']
-
 function stdout(str) {
   process.stdout.write(`${str}\n`)
 }
@@ -30,11 +28,18 @@ class Init {
   async updatePackageFile() {
     const packageInfo = JSON.parse(await this.readFile('package.json'))
 
-    targetProps.forEach((prop) => {
-      packageInfo[prop] = { ...originalPackage[prop], ...packageInfo[prop] }
+    const { scripts } = packageInfo
+    Object.assign(scripts, {
+      'test:watch': `${scripts.test} --watch`,
+      'test:coverage': 'echo "unsupported." && exit 1',
     })
-    packageInfo.scripts['test:watch'] = `${packageInfo.scripts.test} --watch`
-    packageInfo.scripts['test:coverage'] = 'echo "unsupported." && exit 1'
+    Object.keys(originalPackage.scripts)
+      .filter(key => !(key === 'test' || key.startsWith('test:')))
+      .forEach((key) => {
+        scripts[key] = originalPackage.scripts[key]
+      })
+
+    Object.assign(packageInfo['lint-staged'], originalPackage['lint-staged'])
 
     await this.writeFile('package.json', JSON.stringify(packageInfo, null, 2))
   }
diff --git a/test/init.test.js b/test/init.test.js
index 21a0aad3..598a75d3 100644
--- a/test/init.test.js
+++ b/test/init.test.js
@@ -20,7 +20,7 @@ suite('init', () => {
   setup('package.json', async () => {
     packageJson = path.join(workDir, 'package.json')
     await fs.writeJson(packageJson, {
-      scripts: { test: 'abc' },
+      scripts: { test: 'abc', 'lint:js': 'eslint .' },
       'lint-staged': { '*.css': 'xyz' },
     })
   })
@@ -36,6 +36,7 @@ suite('init', () => {
     const pkg = await fs.readJson(packageJson)
 
     assert.deepStrictEqual(pkg.scripts, {
+      build: 'babel src/ -d lib/',
       commitmsg: 'commitlint -e',
       'lint:js': 'eslint --max-warnings=-1 --ignore-path=.gitignore --ext=.js --ext=.jsx .',
       'lint:js:fix': 'npm run lint:js -- --fix',
@@ -47,7 +48,6 @@ suite('init', () => {
       test: 'abc',
       'test:watch': 'abc --watch',
       'test:coverage': 'echo "unsupported." && exit 1',
-      build: 'babel src/ -d lib/',
     })
 
     assert.deepStrictEqual(pkg['lint-staged'], {