diff --git a/cli.js b/cli.js
index e1cb7bd9..86314845 100755
--- a/cli.js
+++ b/cli.js
@@ -1,6 +1,7 @@
 #!/usr/bin/env node
 import { globbySync } from 'globby'
 import fs from 'node:fs'
+import { parseArgs } from 'node:util'
 import sortPackageJson from './index.js'
 import Reporter from './reporter.js'
 
@@ -27,6 +28,25 @@ If file/glob is omitted, './package.json' file will be processed.
   )
 }
 
+function parseCliArguments() {
+  const { values: options, positionals: patterns } = parseArgs({
+    options: {
+      check: { type: 'boolean', short: 'c', default: false },
+      quiet: { type: 'boolean', short: 'q', default: false },
+      version: { type: 'boolean', short: 'v', default: false },
+      help: { type: 'boolean', short: 'h', default: false },
+    },
+    allowPositionals: true,
+    strict: true,
+  })
+
+  if (!patterns.length) {
+    patterns[0] = 'package.json'
+  }
+
+  return { options, patterns }
+}
+
 function sortPackageJsonFile(file, reporter, isCheck) {
   const original = fs.readFileSync(file, 'utf8')
   const sorted = sortPackageJson(original)
@@ -58,41 +78,33 @@ function sortPackageJsonFiles(patterns, options) {
 }
 
 function run() {
-  const cliArguments = process.argv.slice(2)
+  let options, patterns
+  try {
+    ;({ options, patterns } = parseCliArguments())
+  } catch (error) {
+    process.exitCode = 2
+    console.error(error.message)
+    if (
+      error.code === 'ERR_PARSE_ARGS_UNKNOWN_OPTION' ||
+      error.code === 'ERR_PARSE_ARGS_INVALID_OPTION_VALUE'
+    ) {
+      console.error(`Try 'sort-package-json --help' for more information.`)
+    }
+    return
+  }
 
-  if (
-    cliArguments.some((argument) => argument === '--help' || argument === '-h')
-  ) {
+  if (options.help) {
     return showHelpInformation()
   }
 
-  if (
-    cliArguments.some(
-      (argument) => argument === '--version' || argument === '-v',
-    )
-  ) {
+  if (options.version) {
     return showVersion()
   }
 
-  const patterns = []
-  let isCheck = false
-  let shouldBeQuiet = false
-
-  for (const argument of cliArguments) {
-    if (argument === '--check' || argument === '-c') {
-      isCheck = true
-    } else if (argument === '--quiet' || argument === '-q') {
-      shouldBeQuiet = true
-    } else {
-      patterns.push(argument)
-    }
-  }
-
-  if (!patterns.length) {
-    patterns[0] = 'package.json'
-  }
-
-  sortPackageJsonFiles(patterns, { isCheck, shouldBeQuiet })
+  sortPackageJsonFiles(patterns, {
+    isCheck: options.check,
+    shouldBeQuiet: options.quiet,
+  })
 }
 
 run()
diff --git a/reporter.js b/reporter.js
index d61e1eb2..e09053dc 100644
--- a/reporter.js
+++ b/reporter.js
@@ -60,7 +60,7 @@ class Reporter {
       return
     }
 
-    const { isCheck, isQuiet } = this.#options
+    const { isCheck, shouldBeQuiet } = this.#options
 
     if (isCheck && changedFilesCount) {
       process.exitCode = 1
@@ -70,7 +70,7 @@ class Reporter {
       process.exitCode = 2
     }
 
-    if (isQuiet) {
+    if (shouldBeQuiet) {
       return
     }
 
diff --git a/tests/cli.js b/tests/cli.js
index 30388d26..f87574b1 100644
--- a/tests/cli.js
+++ b/tests/cli.js
@@ -63,6 +63,31 @@ test('run `cli --help` with `--version`', macro.testCLI, {
   message: 'Should prioritize help over version.',
 })
 
+test('run `cli --help=value`', macro.testCLI, {
+  args: ['--help=value'],
+  message: 'Should report illegal argument and suggest help.',
+})
+
+test('run `cli --version=true`', macro.testCLI, {
+  args: ['--version=true'],
+  message: 'Should report illegal argument and suggest help.',
+})
+
+test('run `cli --unknown-option`', macro.testCLI, {
+  args: ['--unknown-option'],
+  message: 'Should report unknown option and suggest help.',
+})
+
+test('run `cli -u` with unknown option', macro.testCLI, {
+  args: ['-u'],
+  message: 'Should report unknown option and suggest help.',
+})
+
+test('run `cli --no-version`', macro.testCLI, {
+  args: ['--no-version'],
+  message: 'A snapshot to show how `--no-*` works, not care about result.',
+})
+
 test('run `cli` with no patterns', macro.testCLI, {
   fixtures: [
     {
@@ -87,6 +112,11 @@ test('run `cli --quiet` with no patterns', macro.testCLI, {
   message: 'Should format package.json without message.',
 })
 
+test('run `cli --quiet=value`', macro.testCLI, {
+  args: ['--quiet=value'],
+  message: 'Should report illegal argument and suggest help.',
+})
+
 test('run `cli -q` with no patterns', macro.testCLI, {
   fixtures: [
     {
@@ -111,6 +141,11 @@ test('run `cli --check` with no patterns', macro.testCLI, {
   message: 'Should not sort package.json',
 })
 
+test('run `cli --check=value`', macro.testCLI, {
+  args: ['--check=value'],
+  message: 'Should report illegal argument and suggest help.',
+})
+
 test('run `cli --check --quiet` with no patterns', macro.testCLI, {
   fixtures: [
     {
@@ -147,6 +182,18 @@ test('run `cli -c -q` with no patterns', macro.testCLI, {
   message: 'Should support `-q` alias',
 })
 
+test('run `cli -cq` with no patterns', macro.testCLI, {
+  fixtures: [
+    {
+      file: 'package.json',
+      content: badJson,
+      expect: badJson,
+    },
+  ],
+  args: ['-cq'],
+  message: 'Should support option aggregation',
+})
+
 test('run `cli` on 1 bad file', macro.testCLI, {
   fixtures: [
     {
diff --git a/tests/snapshots/cli.js.md b/tests/snapshots/cli.js.md
index b939c937..59c23a6a 100644
--- a/tests/snapshots/cli.js.md
+++ b/tests/snapshots/cli.js.md
@@ -207,6 +207,96 @@ Generated by [AVA](https://avajs.dev).
       },
     }
 
+## run `cli --help=value`
+
+> Should report illegal argument and suggest help.
+
+    {
+      args: [
+        '--help=value',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Option '-h, --help' does not take an argument␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
+## run `cli --version=true`
+
+> Should report illegal argument and suggest help.
+
+    {
+      args: [
+        '--version=true',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Option '-v, --version' does not take an argument␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
+## run `cli --unknown-option`
+
+> Should report unknown option and suggest help.
+
+    {
+      args: [
+        '--unknown-option',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Unknown option '--unknown-option'. To specify a positional argument starting with a '-', place it at the end of the command after '--', as in '-- "--unknown-option"␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
+## run `cli -u` with unknown option
+
+> Should report unknown option and suggest help.
+
+    {
+      args: [
+        '-u',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Unknown option '-u'. To specify a positional argument starting with a '-', place it at the end of the command after '--', as in '-- "-u"␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
+## run `cli --no-version`
+
+> A snapshot to show how `--no-*` works, not care about result.
+
+    {
+      args: [
+        '--no-version',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Unknown option '--no-version'. To specify a positional argument starting with a '-', place it at the end of the command after '--', as in '-- "--no-version"␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
 ## run `cli` with no patterns
 
 > Should format package.json.
@@ -265,6 +355,24 @@ Generated by [AVA](https://avajs.dev).
       },
     }
 
+## run `cli --quiet=value`
+
+> Should report illegal argument and suggest help.
+
+    {
+      args: [
+        '--quiet=value',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Option '-q, --quiet' does not take an argument␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
 ## run `cli -q` with no patterns
 
 > Should support -q alias.
@@ -325,6 +433,24 @@ Generated by [AVA](https://avajs.dev).
       },
     }
 
+## run `cli --check=value`
+
+> Should report illegal argument and suggest help.
+
+    {
+      args: [
+        '--check=value',
+      ],
+      fixtures: [],
+      result: {
+        errorCode: 2,
+        stderr: `Option '-c, --check' does not take an argument␊
+        Try 'sort-package-json --help' for more information.␊
+        `,
+        stdout: '',
+      },
+    }
+
 ## run `cli --check --quiet` with no patterns
 
 > Should not sort package.json or report a message.
@@ -415,6 +541,34 @@ Generated by [AVA](https://avajs.dev).
       },
     }
 
+## run `cli -cq` with no patterns
+
+> Should support option aggregation
+
+    {
+      args: [
+        '-cq',
+      ],
+      fixtures: [
+        {
+          expect: `{␊
+            "version": "1.0.0",␊
+            "name": "sort-package-json"␊
+          }`,
+          file: 'package.json',
+          original: `{␊
+            "version": "1.0.0",␊
+            "name": "sort-package-json"␊
+          }`,
+        },
+      ],
+      result: {
+        errorCode: 1,
+        stderr: '',
+        stdout: '',
+      },
+    }
+
 ## run `cli` on 1 bad file
 
 > Should format 1 file.
diff --git a/tests/snapshots/cli.js.snap b/tests/snapshots/cli.js.snap
index daa91527..63e2fd66 100644
Binary files a/tests/snapshots/cli.js.snap and b/tests/snapshots/cli.js.snap differ