diff --git a/package.json b/package.json
index 2e3ca19..f0bed28 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
 		"@rollup/plugin-node-resolve": "11.0.1",
 		"@rollup/plugin-replace": "2.3.4",
 		"@rollup/pluginutils": "4.1.0",
-		"@types/node": "14.14.16",
+		"@types/node": "14.14.19",
 		"@vercel/ncc": "0.24.1",
 		"babel-plugin-codegen": "4.0.1",
 		"babel-plugin-dev-expression": "0.2.2",
@@ -81,10 +81,10 @@
 		"rollup-plugin-node-globals": "1.4.0",
 		"semantic-release": "17.3.1",
 		"servor": "4.0.2",
-		"sort-package-json": "1.48.0",
+		"sort-package-json": "1.48.1",
 		"terser": "5.5.1",
 		"typescript": "^4.1.3",
-		"xo": "0.36.1",
+		"xo": "0.37.1",
 		"xo-quick": "0.0.6"
 	}
 }
diff --git a/src/babel.js b/src/babel.js
index 5ce5e46..315f1c5 100644
--- a/src/babel.js
+++ b/src/babel.js
@@ -15,7 +15,7 @@ import pluginMacros from 'babel-plugin-macros'
 import pluginCodegen from 'babel-plugin-codegen'
 
 const hasPackage = (pkg, name) =>
-	// eslint-disable-next-line unicorn/no-reduce
+	// eslint-disable-next-line unicorn/no-array-reduce
 	['dependencies', 'devDependencies', 'peerDependencies'].reduce(
 		(last, current) => last || (pkg[current] && pkg[current][name]),
 		false
diff --git a/src/init.js b/src/init.js
index 95a290c..1a767a5 100644
--- a/src/init.js
+++ b/src/init.js
@@ -1,9 +1,9 @@
 import merge from 'deepmerge'
 import sort from 'sort-package-json'
 import cli from '../package.json'
-import { getDefaults, getTemplates } from './init-create'
-import { error, info, warn } from './logger'
-import { exec, exists, read, write, baseName } from './utils'
+import { getDefaults, getTemplates } from './init-create.js'
+import { error, info, warn } from './logger.js'
+import { exec, exists, read, write, baseName } from './utils.js'
 
 /**
  * Source user's .gitconfig info (name & email)
diff --git a/src/klap.js b/src/klap.js
index 3836467..2191d51 100644
--- a/src/klap.js
+++ b/src/klap.js
@@ -1,8 +1,8 @@
 import { rollup, watch } from 'rollup'
-import { error, info, log } from './logger'
-import { getOptions } from './options'
-import { plugins, dtsPlugins } from './plugins'
-import { exists, read } from './utils'
+import { error, info, log } from './logger.js'
+import { getOptions } from './options.js'
+import { plugins, dtsPlugins } from './plugins.js'
+import { exists, read } from './utils.js'
 
 const defaultInputOptions = { inlineDynamicImports: true }
 const defaultOutputOptions = { esModule: false, strict: false, freeze: false }
@@ -170,5 +170,5 @@ const klap = async (command, pkg) => {
 	}
 }
 
-export { init } from './init'
+export { init } from './init.js'
 export { klap, error, info, log, read }
diff --git a/src/options.js b/src/options.js
index 5e420dd..704689f 100644
--- a/src/options.js
+++ b/src/options.js
@@ -1,5 +1,5 @@
 import getopts from 'getopts'
-import { safePackageName } from './utils'
+import { safePackageName } from './utils.js'
 
 const getOptions = (pkg, command) => {
 	const {
diff --git a/src/packages/servor.js b/src/packages/servor.js
index eddb914..b22a058 100644
--- a/src/packages/servor.js
+++ b/src/packages/servor.js
@@ -2,7 +2,7 @@
  * A rollup plugin to start `servor` as build step
  */
 import _servor from 'servor'
-import { warn } from '../logger'
+import { warn } from '../logger.js'
 
 let singleton = false
 
diff --git a/src/packages/sizeme.js b/src/packages/sizeme.js
index b590100..8496a17 100644
--- a/src/packages/sizeme.js
+++ b/src/packages/sizeme.js
@@ -6,7 +6,7 @@
  */
 import gzip from 'gzip-size'
 import prettyBytes from 'pretty-bytes'
-import { info } from '../logger'
+import { info } from '../logger.js'
 
 export const sizeme = () => {
 	const showSize = (bundle) => {
diff --git a/src/packages/terser.js b/src/packages/terser.js
index f9738db..bc35740 100644
--- a/src/packages/terser.js
+++ b/src/packages/terser.js
@@ -9,7 +9,7 @@ import { readFileSync, existsSync, writeFileSync } from 'fs'
 import { codeFrameColumns } from '@babel/code-frame'
 import { createFilter } from '@rollup/pluginutils'
 import { minify } from 'terser'
-import { error } from '../logger'
+import { error } from '../logger.js'
 import merge from 'deepmerge'
 
 const transform = async (code, options) => {
diff --git a/src/plugins.js b/src/plugins.js
index 883a91c..cbba4d9 100644
--- a/src/plugins.js
+++ b/src/plugins.js
@@ -6,11 +6,11 @@ import replace from '@rollup/plugin-replace'
 import nodeGlobals from 'rollup-plugin-node-globals'
 import babel from '@rollup/plugin-babel'
 
-import { terser } from './packages/terser'
-import { sizeme } from './packages/sizeme'
-import { servor } from './packages/servor'
+import { terser } from './packages/terser.js'
+import { sizeme } from './packages/sizeme.js'
+import { servor } from './packages/servor.js'
 
-import { babelConfig } from './babel'
+import { babelConfig } from './babel.js'
 
 const plugins = (command, pkg, options) => {
 	const { extensions, presets, plugins } = babelConfig(command, pkg, options)