diff --git a/.eslintrc.json b/.eslintrc.json
index 8342841..ac0d50e 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -5,7 +5,7 @@
     "node": true
   },
   "parserOptions": {
-    "ecmaVersion": 2020,
+    "ecmaVersion": 2022,
     "sourceType": "module"
   },
   "extends": "eslint:recommended",
diff --git a/index.js b/index.js
index 53cdd51..0aa8560 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,6 @@
 import process from 'node:process';
 import lib from './lib/index.js';
 
-export default lib(process.cwd()).path();
+const hugoBin = await lib(process.cwd());
+
+export default hugoBin.path();
diff --git a/lib/index.js b/lib/index.js
index d973eea..b4a9162 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,12 +1,11 @@
-import fs from 'node:fs';
+import fs from 'node:fs/promises';
 import path from 'node:path';
 import process from 'node:process';
 import { fileURLToPath } from 'node:url';
 import BinWrapper from '@xhmikosr/bin-wrapper';
-import { packageConfigSync } from 'pkg-conf';
-
-const { hugoVersion } = JSON.parse(fs.readFileSync(new URL('../package.json', import.meta.url)));
+import { packageConfig } from 'pkg-conf';
 
+const { hugoVersion } = JSON.parse(await fs.readFile(new URL('../package.json', import.meta.url)));
 const destDir = path.join(fileURLToPath(new URL('../vendor', import.meta.url)));
 const binName = process.platform === 'win32' ? 'hugo.exe' : 'hugo';
 
@@ -41,11 +40,10 @@ const normalBin = (baseDownloadUrl) => new BinWrapper()
   .dest(destDir)
   .use(binName);
 
-function main(projectRoot) {
-  const config = packageConfigSync('hugo-bin', { cwd: projectRoot });
+async function main(projectRoot) {
+  const config = await packageConfig('hugo-bin', { cwd: projectRoot });
   const extended = (process.env.HUGO_BIN_BUILD_TAGS || process.env.npm_config_hugo_bin_build_tags || config.buildTags) === 'extended';
   const downloadRepo = (process.env.HUGO_BIN_DOWNLOAD_REPO || process.env.npm_config_hugo_bin_download_repo || config.downloadRepo || 'https://github.com');
-
   const baseDownloadUrl = `${downloadRepo}/gohugoio/hugo/releases/download/v${hugoVersion}/`;
 
   return extended ? extendedBin(baseDownloadUrl) : normalBin(baseDownloadUrl);
diff --git a/lib/install.js b/lib/install.js
index 65e675b..82db14a 100644
--- a/lib/install.js
+++ b/lib/install.js
@@ -1,7 +1,7 @@
 import path from 'node:path';
 import process from 'node:process';
 import picocolors from 'picocolors';
-import bin from './index.js';
+import hugoBin from './index.js';
 
 function getProjectRoot() {
   // `projectRoot` on postinstall could be INIT_CWD introduced in npm >= 5.4
@@ -23,10 +23,17 @@ function getProjectRoot() {
   return cwd;
 }
 
-bin(getProjectRoot()).run(['version'])
-  .then(() => {
+async function main() {
+  const projectRoot = getProjectRoot();
+  const bin = await hugoBin(projectRoot);
+
+  bin.run(['version']).then(() => {
     console.log(picocolors.green('Hugo binary successfully installed!'));
   })
   .catch(error => {
-    console.error(picocolors.red(`${error.message}\nHugo binary installation failed!`));
+    console.error(picocolors.red('Hugo binary installation failed!'));
+    throw new Error(error);
   });
+}
+
+main();
diff --git a/package.json b/package.json
index ec1c69d..783e7ab 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,9 @@
   "author": "satoshun00 <shun.sato@fenneclab.com>",
   "license": "MIT",
   "type": "module",
-  "exports": "./index.js",
+  "exports": {
+    ".": "./index.js"
+  },
   "bin": {
     "hugo": "cli.js"
   },
diff --git a/test/index.js b/test/index.js
index aeffbe1..c0b85a1 100644
--- a/test/index.js
+++ b/test/index.js
@@ -5,10 +5,9 @@ import { test, suite } from 'uvu';
 import hugoBin from '../index.js';
 import hugoLib from '../lib/index.js';
 
-test('should return path to binary and work', () => {
-  return binCheck(hugoBin, ['version']).then(works => {
-    assert.ok(works);
-  });
+test('should return path to binary and work', async () => {
+  const works = await binCheck(hugoBin, ['version']);
+  assert.equal(works, true);
 });
 
 test.run();
@@ -32,26 +31,29 @@ hugoLibCustomRepoTestSuite('verify test env', () => {
 
 // Default Repository - Test Cases
 
-hugoLibCustomRepoTestSuite('should return default repository url - Repository: default - Extended: undefined', () => {
-  const repoSources = hugoLib(process.cwd())._src.map((v) => v.url);
+hugoLibCustomRepoTestSuite('should return default repository url - Repository: default - Extended: undefined', async () => {
+  const lib = await hugoLib(process.cwd());
+  const repoSources = lib._src.map((v) => v.url);
 
   for (const sourceUrl of repoSources) {
     assert.equal(sourceUrl.startsWith('https://github.com/'), true);
   }
 });
 
-hugoLibCustomRepoTestSuite('should return default repository url - Repository: default - Extended: empty', () => {
+hugoLibCustomRepoTestSuite('should return default repository url - Repository: default - Extended: empty', async () => {
   process.env.npm_config_hugo_bin_build_tags = '';
-  const repoSources = hugoLib(process.cwd())._src.map((v) => v.url);
+  const lib = await hugoLib(process.cwd());
+  const repoSources = lib._src.map((v) => v.url);
 
   for (const sourceUrl of repoSources) {
     assert.equal(sourceUrl.startsWith('https://github.com/'), true);
   }
 });
 
-hugoLibCustomRepoTestSuite('should return default repository url - Repository: default - Extended: extended', () => {
+hugoLibCustomRepoTestSuite('should return default repository url - Repository: default - Extended: extended', async () => {
   process.env.npm_config_hugo_bin_build_tags = 'extended';
-  const repoSources = hugoLib(process.cwd())._src.map((v) => v.url);
+  const lib = await hugoLib(process.cwd());
+  const repoSources = lib._src.map((v) => v.url);
 
   for (const sourceUrl of repoSources) {
     assert.equal(sourceUrl.startsWith('https://github.com/'), true);
@@ -60,29 +62,32 @@ hugoLibCustomRepoTestSuite('should return default repository url - Repository: d
 
 // Custom/Enterprise Repository Test Cases
 
-hugoLibCustomRepoTestSuite('should return custom repository url - Repository: custom - Extended: undefined', () => {
+hugoLibCustomRepoTestSuite('should return custom repository url - Repository: custom - Extended: undefined', async () => {
   process.env.npm_config_hugo_bin_download_repo = 'https://some1.example.com';
-  const repoSources = hugoLib(process.cwd())._src.map((v) => v.url);
+  const lib = await hugoLib(process.cwd());
+  const repoSources = lib._src.map((v) => v.url);
 
   for (const sourceUrl of repoSources) {
     assert.equal(sourceUrl.startsWith('https://some1.example.com/'), true);
   }
 });
 
-hugoLibCustomRepoTestSuite('should return custom repository url - Repository: custom - Extended: empty', () => {
+hugoLibCustomRepoTestSuite('should return custom repository url - Repository: custom - Extended: empty', async () => {
   process.env.npm_config_hugo_bin_build_tags = '';
   process.env.npm_config_hugo_bin_download_repo = 'https://some2.example.com';
-  const repoSources = hugoLib(process.cwd())._src.map((v) => v.url);
+  const lib = await hugoLib(process.cwd());
+  const repoSources = lib._src.map((v) => v.url);
 
   for (const sourceUrl of repoSources) {
     assert.equal(sourceUrl.startsWith('https://some2.example.com/'), true);
   }
 });
 
-hugoLibCustomRepoTestSuite('should return custom repository url - Repository: custom - Extended: extended', () => {
+hugoLibCustomRepoTestSuite('should return custom repository url - Repository: custom - Extended: extended', async () => {
   process.env.npm_config_hugo_bin_build_tags = 'extended';
   process.env.npm_config_hugo_bin_download_repo = 'https://some3.example.com';
-  const repoSources = hugoLib(process.cwd())._src.map((v) => v.url);
+  const lib = await hugoLib(process.cwd());
+  const repoSources = lib._src.map((v) => v.url);
 
   for (const sourceUrl of repoSources) {
     assert.equal(sourceUrl.startsWith('https://some3.example.com/'), true);