diff --git a/package.json b/package.json
index 4a6e012..69a4e12 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "globals": "^16.5.0",
     "npm-run-all": "^4.1.5",
     "outdent": "^0.8.0",
-    "prettier": "3.6.2",
+    "prettier": "3.7.4",
     "temp-dir": "^3.0.0",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.46.2",
diff --git a/src/execute/create-temporary-directory.ts b/src/execute/create-temporary-directory.ts
index 9097938..5c449b9 100644
--- a/src/execute/create-temporary-directory.ts
+++ b/src/execute/create-temporary-directory.ts
@@ -1,27 +1,29 @@
-import fs from 'node:fs/promises'
-import os from 'node:os'
-import path from 'node:path';
-import crypto from "node:crypto";
-
-export async function createTemporaryDirectory() {
-  const directory = path.join(
-    // The following quoted from https://github.com/es-tooling/module-replacements/blob/27d1acd38f19741e31d2eae561a5c8a914373fc5/docs/modules/tempy.md?plain=1#L20-L21, not sure if it's true
-    // MacOS and possibly some other platforms return a symlink from `os.tmpdir`.
-    // For some applications, this can cause problems; thus, we use `realpath`.
-    await fs.realpath(os.tmpdir()),
-    crypto.randomBytes(16).toString("hex"),
-  );
-
-  fs.mkdir(directory);
-
-  return {
-    path: directory,
-    dispatch: () => destroyTemporaryDirectory(directory)
-  };
-}
-
-async function destroyTemporaryDirectory(directory: string) {
-  await fs.rm(directory, {recursive: true, force: true})
-}
-
-export type TemporaryDirectory = Awaited<ReturnType<typeof createTemporaryDirectory>>
\ No newline at end of file
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import crypto from "node:crypto";
+
+export async function createTemporaryDirectory() {
+  const directory = path.join(
+    // The following quoted from https://github.com/es-tooling/module-replacements/blob/27d1acd38f19741e31d2eae561a5c8a914373fc5/docs/modules/tempy.md?plain=1#L20-L21, not sure if it's true
+    // MacOS and possibly some other platforms return a symlink from `os.tmpdir`.
+    // For some applications, this can cause problems; thus, we use `realpath`.
+    await fs.realpath(os.tmpdir()),
+    crypto.randomBytes(16).toString("hex"),
+  );
+
+  fs.mkdir(directory);
+
+  return {
+    path: directory,
+    dispatch: () => destroyTemporaryDirectory(directory),
+  };
+}
+
+async function destroyTemporaryDirectory(directory: string) {
+  await fs.rm(directory, { recursive: true, force: true });
+}
+
+export type TemporaryDirectory = Awaited<
+  ReturnType<typeof createTemporaryDirectory>
+>;
diff --git a/src/execute/index.ts b/src/execute/index.ts
index 0937f38..505241b 100644
--- a/src/execute/index.ts
+++ b/src/execute/index.ts
@@ -6,7 +6,7 @@ import * as configuration from "../configuration.ts";
 import * as git from "../tools/git.ts";
 import * as logger from "../logger.ts";
 import { getProjects, getTargetRepositoryPath } from "../projects.ts";
-import {installPrettier} from './install-prettier.ts'
+import { installPrettier } from "./install-prettier.ts";
 
 export interface ExecuteResultEntry {
   commitHash: string;
@@ -42,7 +42,7 @@ export async function execute({
     }),
   );
 
-  await originalPrettier.dispatch()
+  await originalPrettier.dispatch();
 
   // Setup alternativeVersionPrettier
   await logger.log("Setting up alternativeVersionPrettier...");
@@ -54,7 +54,7 @@ export async function execute({
       await runPrettier(alternativePrettier, project);
     }),
   );
-  await alternativePrettier.dispatch()
+  await alternativePrettier.dispatch();
 
   const diffs = await Promise.all(
     projects.map(getTargetRepositoryPath).map(git.diffRepository),
diff --git a/src/execute/install-prettier.ts b/src/execute/install-prettier.ts
index b892449..67fc289 100644
--- a/src/execute/install-prettier.ts
+++ b/src/execute/install-prettier.ts
@@ -1,67 +1,67 @@
-import path from "node:path";
-import {
-  PrettierVersion,
-  PrettierPullRequest,
-  sourceTypes
-} from "../parse.ts";
-import * as configuration from "../configuration.ts";
-import * as brew from "../tools/brew.ts";
-import * as gh from "../tools/gh.ts";
-import * as yarn from "../tools/yarn.ts";
-import * as npm from "../tools/npm.ts";
-import * as unix from "../tools/unix.ts";
-import {createTemporaryDirectory, type TemporaryDirectory} from './create-temporary-directory.ts'
-
-export type InstalledPrettier = Awaited<ReturnType<typeof installPrettier>>
-
-export async function installPrettier(
-  prettierVersion: PrettierVersion,
-) {
-  let version: string
-  let pullRequestDirectory: TemporaryDirectory | undefined
-  if (prettierVersion.type === sourceTypes.pullRequest) {
-    ({version, directory: pullRequestDirectory} = await getPullRequest(prettierVersion.number) )
-  } else {
-    ({version} = prettierVersion)
-  }
-
-  
-  const directory = await createTemporaryDirectory()
-  const {path: cwd} = directory
-  await yarn.init(['-y'], {cwd})
-  await yarn.add([`prettier@${version}`],{cwd})
-
-  await pullRequestDirectory?.dispatch()
-
-  return {
-    dispatch: () => {directory.dispatch()},
-    bin: path.join(cwd, 'node_modules/prettier/bin/prettier.cjs'),
-    name: prettierVersion.raw
-  }
-}
-
-async function existsGh() {
-  return !(await unix.which("gh")).includes("gh not found");
-}
-
-async function getPullRequest(
-  pullRequestNumber: PrettierPullRequest['number'],
-) {
-  if (!(await existsGh())) {
-    await brew.install("gh");
-  }
-  if (configuration.authToken !== "nothing") {
-    // running locally, `gh` can be already authenticated
-    await gh.authLoginWithToken(configuration.authToken);
-  }
-
-  const directory = await createTemporaryDirectory()
-
-  await gh.prCheckout(pullRequestNumber, directory.path);
-  const {stdout} = await npm.pack({cwd: directory.path});
-
-  return {
-    directory,
-    version: `file:${path.join(directory.path, stdout.trim())}`
-  };
-}
+import path from "node:path";
+import { PrettierVersion, PrettierPullRequest, sourceTypes } from "../parse.ts";
+import * as configuration from "../configuration.ts";
+import * as brew from "../tools/brew.ts";
+import * as gh from "../tools/gh.ts";
+import * as yarn from "../tools/yarn.ts";
+import * as npm from "../tools/npm.ts";
+import * as unix from "../tools/unix.ts";
+import {
+  createTemporaryDirectory,
+  type TemporaryDirectory,
+} from "./create-temporary-directory.ts";
+
+export type InstalledPrettier = Awaited<ReturnType<typeof installPrettier>>;
+
+export async function installPrettier(prettierVersion: PrettierVersion) {
+  let version: string;
+  let pullRequestDirectory: TemporaryDirectory | undefined;
+  if (prettierVersion.type === sourceTypes.pullRequest) {
+    ({ version, directory: pullRequestDirectory } = await getPullRequest(
+      prettierVersion.number,
+    ));
+  } else {
+    ({ version } = prettierVersion);
+  }
+
+  const directory = await createTemporaryDirectory();
+  const { path: cwd } = directory;
+  await yarn.init(["-y"], { cwd });
+  await yarn.add([`prettier@${version}`], { cwd });
+
+  await pullRequestDirectory?.dispatch();
+
+  return {
+    dispatch: () => {
+      directory.dispatch();
+    },
+    bin: path.join(cwd, "node_modules/prettier/bin/prettier.cjs"),
+    name: prettierVersion.raw,
+  };
+}
+
+async function existsGh() {
+  return !(await unix.which("gh")).includes("gh not found");
+}
+
+async function getPullRequest(
+  pullRequestNumber: PrettierPullRequest["number"],
+) {
+  if (!(await existsGh())) {
+    await brew.install("gh");
+  }
+  if (configuration.authToken !== "nothing") {
+    // running locally, `gh` can be already authenticated
+    await gh.authLoginWithToken(configuration.authToken);
+  }
+
+  const directory = await createTemporaryDirectory();
+
+  await gh.prCheckout(pullRequestNumber, directory.path);
+  const { stdout } = await npm.pack({ cwd: directory.path });
+
+  return {
+    directory,
+    version: `file:${path.join(directory.path, stdout.trim())}`,
+  };
+}
diff --git a/src/execute/run-prettier.ts b/src/execute/run-prettier.ts
index 8c52287..b145387 100644
--- a/src/execute/run-prettier.ts
+++ b/src/execute/run-prettier.ts
@@ -2,7 +2,7 @@ import path from "path";
 import spawn from "nano-spawn";
 import { type Project, getTargetRepositoryPath } from "../projects.ts";
 import * as yarn from "../tools/yarn.ts";
-import {type InstalledPrettier} from './install-prettier.ts'
+import { type InstalledPrettier } from "./install-prettier.ts";
 
 export async function runPrettier(
   prettier: InstalledPrettier,
diff --git a/src/parse.ts b/src/parse.ts
index f90d0a2..a9014d5 100644
--- a/src/parse.ts
+++ b/src/parse.ts
@@ -1,24 +1,21 @@
 export const sourceTypes = {
-  pullRequest: 'pull-request',
-  package: 'package',
+  pullRequest: "pull-request",
+  package: "package",
 } as const;
 
 export interface PrettierPackage {
   type: typeof sourceTypes.package;
-  version: string,
+  version: string;
   raw?: string;
 }
 
 export interface PrettierPullRequest {
   type: typeof sourceTypes.pullRequest;
-  number: string,
+  number: string;
   raw?: string;
 }
 
-
-export type PrettierVersion =
-  | PrettierPackage
-  | PrettierPullRequest;
+export type PrettierVersion = PrettierPackage | PrettierPullRequest;
 
 export type Project = {
   repositoryUrl: string;
@@ -38,8 +35,7 @@ export function parse(source: string): Command {
   const tokens = tokenize(source);
 
   let alternativePrettier: PrettierVersion | undefined = undefined;
-  let originalPrettier: PrettierVersion =
-    defaultPrettierRepositorySource;
+  let originalPrettier: PrettierVersion = defaultPrettierRepositorySource;
 
   for (const [index, token] of tokenize(source).entries()) {
     const lookahead = (): Token => {
@@ -99,7 +95,7 @@ export function parseRepositorySource(token: Token): PrettierVersion {
     throw new Error(`Unexpected token '${token.kind}', expect 'source'.`);
   }
 
-  const raw = token.value
+  const raw = token.value;
 
   // like "#3465"
   if (/^#\d+$/.test(raw)) {
@@ -112,10 +108,10 @@ export function parseRepositorySource(token: Token): PrettierVersion {
 
   // Any source yarn accepts https://yarnpkg.com/cli/add
   // `sosukesuzuki/prettier#ref`, `3.0.0`, ... and so on
-  const packagePrefix = 'prettier@'
-  let version = raw
+  const packagePrefix = "prettier@";
+  let version = raw;
   if (version.startsWith(packagePrefix)) {
-    version = version.slice(packagePrefix.length)
+    version = version.slice(packagePrefix.length);
   }
 
   return {
diff --git a/src/tools/npm.ts b/src/tools/npm.ts
index 013a805..333d743 100644
--- a/src/tools/npm.ts
+++ b/src/tools/npm.ts
@@ -1,5 +1,5 @@
-import spawn, {type Subprocess, type Options} from "nano-spawn";
-
-export async function pack(options: Options): Promise<Subprocess> {
-  return await spawn("npm", ['pack'], options);
-}
+import spawn, { type Subprocess, type Options } from "nano-spawn";
+
+export async function pack(options: Options): Promise<Subprocess> {
+  return await spawn("npm", ["pack"], options);
+}
diff --git a/src/tools/yarn.ts b/src/tools/yarn.ts
index a8442d5..07e51e1 100644
--- a/src/tools/yarn.ts
+++ b/src/tools/yarn.ts
@@ -1,13 +1,13 @@
-import spawn, {type Options} from "nano-spawn";
+import spawn, { type Options } from "nano-spawn";
 
 export async function install(cwd: string): Promise<void> {
   await spawn("yarn", [], { cwd });
 }
 
-export async function init(args: string [] ,options: Options): Promise<void> {
-  await spawn("yarn", ['init',...args], options);
+export async function init(args: string[], options: Options): Promise<void> {
+  await spawn("yarn", ["init", ...args], options);
 }
 
-export async function add(args: string [] ,options: Options): Promise<void> {
-  await spawn("yarn", ['add',...args], options);
+export async function add(args: string[], options: Options): Promise<void> {
+  await spawn("yarn", ["add", ...args], options);
 }
diff --git a/yarn.lock b/yarn.lock
index e4b365d..2308e4a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3738,7 +3738,7 @@ __metadata:
     nano-spawn: "npm:^2.0.0"
     npm-run-all: "npm:^4.1.5"
     outdent: "npm:^0.8.0"
-    prettier: "npm:3.6.2"
+    prettier: "npm:3.7.4"
     semver: "npm:^7.7.3"
     temp-dir: "npm:^3.0.0"
     typescript: "npm:^5.9.3"
@@ -3747,12 +3747,12 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"prettier@npm:3.6.2":
-  version: 3.6.2
-  resolution: "prettier@npm:3.6.2"
+"prettier@npm:3.7.4":
+  version: 3.7.4
+  resolution: "prettier@npm:3.7.4"
   bin:
     prettier: bin/prettier.cjs
-  checksum: 10c0/488cb2f2b99ec13da1e50074912870217c11edaddedeadc649b1244c749d15ba94e846423d062e2c4c9ae683e2d65f754de28889ba06e697ac4f988d44f45812
+  checksum: 10c0/9675d2cd08eacb1faf1d1a2dbfe24bfab6a912b059fc9defdb380a408893d88213e794a40a2700bd29b140eb3172e0b07c852853f6e22f16f3374659a1a13389
   languageName: node
   linkType: hard