diff --git a/bin/postpublish.js b/bin/postpublish.js
new file mode 100644
index 0000000..b027a24
--- /dev/null
+++ b/bin/postpublish.js
@@ -0,0 +1,9 @@
+const { removeSync, pathExistsSync, moveSync } = require('fs-extra')
+
+if (pathExistsSync('./package.json')) {
+  removeSync('./package.json')
+}
+
+if (pathExistsSync('./package.backup.json')) {
+  moveSync('./package.backup.json', './package.json')
+}
diff --git a/bin/prepublish.js b/bin/prepublish.js
new file mode 100644
index 0000000..4dc6dae
--- /dev/null
+++ b/bin/prepublish.js
@@ -0,0 +1,36 @@
+const { writeFileSync, copySync, pathExistsSync } = require('fs-extra')
+const yargs = require('yargs/yargs')
+const { hideBin } = require('yargs/helpers')
+const argv = yargs(hideBin(process.argv)).argv
+
+let pkg = require('../package.json')
+
+const development = argv.dev
+const production = argv.prod
+
+if (!development && !production) {
+  throw new Error('Unknown environment.')
+}
+
+let version = '0.1.' + ~~(Date.now() / 1000)
+let name = '@aaron-dev/torchlight-cli'
+
+if (production) {
+  // Populated by GitHub actions
+  version = process.env.PACKAGE_VERSION
+  name = '@torchlight-api/torchlight-cli'
+}
+
+if (pathExistsSync('./package.backup.json')) {
+  throw new Error('package.backup.json already exists, not overwriting.')
+}
+
+copySync('./package.json', './package.backup.json')
+
+pkg = {
+  ...pkg,
+  name,
+  version: version
+}
+
+writeFileSync('./package.json', JSON.stringify(pkg, null, 2))
diff --git a/bin/release b/bin/release
new file mode 100755
index 0000000..7961fe5
--- /dev/null
+++ b/bin/release
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+set -e
+
+if [ "$1" != "dev" ] && [ "$1" != "prod" ]; then
+  echo "The first argument must be 'dev' or 'prod'."
+  exit
+fi
+
+set -x
+
+yarn run build
+node ./bin/prepublish.js --"$1"
+npm publish --access public
+node ./bin/postpublish.js --"$1"
\ No newline at end of file
diff --git a/index.js b/index.js
index 7aeb2f9..ca451a0 100755
--- a/index.js
+++ b/index.js
@@ -1,5 +1,5 @@
-import torchlight from './src/torchlight'
-import Block from './src/block'
+import torchlight from './src/torchlight.js'
+import Block from './src/block.js'
 
 export {
   torchlight,
diff --git a/package.json b/package.json
index 3777846..5ec659e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,8 @@
     "name": "@torchlight-api/torchlight-cli",
     "version": "0.1.4",
     "description": "A CLI for Torchlight - the syntax highlighting API",
-    "main": "index.js",
+	"type": "module",
+    "exports": "./index.js",
     "scripts": {
         "test": "standard --env jest && jest",
         "build": "babel src --out-dir lib --copy-files \"--ignore\" \"src/stubs/**/*\""
diff --git a/src/bin/torchlight.js b/src/bin/torchlight.js
index 10ac0e5..2359fe6 100755
--- a/src/bin/torchlight.js
+++ b/src/bin/torchlight.js
@@ -1,4 +1,4 @@
 #! /usr/bin/env node
-import { makeProgram } from '../cli'
+import { makeProgram } from '../cli.js'
 
 makeProgram().parse()
diff --git a/src/block.js b/src/block.js
index 9e3e8d4..7ba4497 100644
--- a/src/block.js
+++ b/src/block.js
@@ -1,6 +1,6 @@
 import md5 from 'md5'
-import guid from './support/guid'
-import torchlight from './torchlight'
+import guid from './support/guid.js'
+import torchlight from './torchlight.js'
 
 export default function Block (opts = {}) {
   opts = {
diff --git a/src/cli.js b/src/cli.js
index 085e826..886c171 100644
--- a/src/cli.js
+++ b/src/cli.js
@@ -1,9 +1,9 @@
 import { program } from 'commander'
-import torchlight from './torchlight'
-import highlight from './commands/highlight'
-import init from './commands/init'
-import cacheClear from './commands/cache/clear'
-import { makeConfig, makeCache } from './config'
+import torchlight from './torchlight.js'
+import highlight from './commands/highlight.js'
+import init from './commands/init.js'
+import cacheClear from './commands/cache/clear.js'
+import { makeConfig, makeCache } from './config.js'
 
 /**
  * Configure the commander CLI application.
diff --git a/src/commands/highlight.js b/src/commands/highlight.js
index ae62cc6..d9036c3 100644
--- a/src/commands/highlight.js
+++ b/src/commands/highlight.js
@@ -1,11 +1,11 @@
 import path from 'path'
-import torchlight from '../torchlight'
-import Block from '../block'
+import torchlight from '../torchlight.js'
+import Block from '../block.js'
 import cheerio from 'cheerio'
 import chokidar from 'chokidar'
-import log from '../support/log'
+import log from '../support/log.js'
 import fs from 'fs-extra'
-import { bus, FILE_WATCHING_COMPLETE } from '../support/bus'
+import { bus, FILE_WATCHING_COMPLETE } from '../support/bus.js'
 
 export default function (torchlight, options) {
   options = {
diff --git a/src/commands/init.js b/src/commands/init.js
index 1e188c8..ce36a3c 100644
--- a/src/commands/init.js
+++ b/src/commands/init.js
@@ -1,7 +1,7 @@
 import fs from 'fs-extra'
 import path from 'path'
 import inquirer from 'inquirer'
-import log from '../support/log'
+import log from '../support/log.js'
 
 function write (location) {
   const source = path.resolve(path.join(__dirname, '../stubs/config.js'))
diff --git a/src/config.js b/src/config.js
index 044581d..76cfbeb 100644
--- a/src/config.js
+++ b/src/config.js
@@ -1,7 +1,7 @@
 import fs from 'fs-extra'
 import path from 'path'
-import FileCache from './cache/file'
-import MemoryCache from './cache/memory'
+import FileCache from './cache/file.js'
+import MemoryCache from './cache/memory.js'
 
 /**
  * @param {string|object} config
diff --git a/src/torchlight.js b/src/torchlight.js
index 913d046..0a9a443 100644
--- a/src/torchlight.js
+++ b/src/torchlight.js
@@ -2,8 +2,8 @@ import axios from 'axios'
 import md5 from 'md5'
 import get from 'lodash.get'
 import chunk from 'lodash.chunk'
-import log from './support/log'
-import MemoryCache from './cache/memory'
+import log from './support/log.js'
+import MemoryCache from './cache/memory.js'
 
 /**
  * @constructor
diff --git a/tests/highlight.test.js b/tests/highlight.test.js
index d4952de..966196d 100644
--- a/tests/highlight.test.js
+++ b/tests/highlight.test.js
@@ -1,6 +1,6 @@
-import torchlight from '../src/torchlight';
-import {mockApi, fixture} from './support/helpers';
-import log from '../src/support/log';
+import torchlight from '../src/torchlight.js';
+import {mockApi, fixture} from './support/helpers.js';
+import log from '../src/support/log.js';
 
 process.env.TORCHLIGHT_TOKEN = 'test'
 
diff --git a/tests/support/helpers.js b/tests/support/helpers.js
index 2bf6bd2..2de5bed 100644
--- a/tests/support/helpers.js
+++ b/tests/support/helpers.js
@@ -1,7 +1,7 @@
-import { bus, FILE_WATCHING_COMPLETE } from '../../src/support/bus'
-import { testCli } from '../../src/cli'
 import { readFileSync } from 'fs-extra'
-import torchlight from '../../src/torchlight'
+import { bus, FILE_WATCHING_COMPLETE } from '../../src/support/bus.js'
+import { testCli } from '../../src/cli.js'
+import torchlight from '../../src/torchlight.js'
 
 function fixture (file, callback, options = {}) {
   options = {