diff --git a/.github/label-pr-config.yml b/.github/label-pr-config.yml
index a8d22980f6db18..5f83de231262a5 100644
--- a/.github/label-pr-config.yml
+++ b/.github/label-pr-config.yml
@@ -67,7 +67,7 @@ subSystemLabels:
   /^tools\/make-v8/: tools, v8 engine, needs-ci
   /^tools\/v8_gypfiles/: tools, v8 engine, needs-ci
   /^tools\/(code_cache|snapshot)/: needs-ci
-  /^tools\/build-addons.js/: needs-ci
+  /^tools\/build-addons.mjs/: needs-ci
   # all other tool changes should be marked as such
   /^tools\//: tools
   /^\.eslint|\.remark|\.editorconfig/: tools
diff --git a/Makefile b/Makefile
index a6549a8474c215..9f7ab7129d0647 100644
--- a/Makefile
+++ b/Makefile
@@ -366,13 +366,13 @@ ADDONS_BINDING_SOURCES := \
 	$(filter-out test/addons/??_*/*.h, $(wildcard test/addons/*/*.h))
 
 ADDONS_PREREQS := config.gypi \
-	deps/npm/node_modules/node-gyp/package.json tools/build-addons.js \
+	deps/npm/node_modules/node-gyp/package.json tools/build-addons.mjs \
 	deps/uv/include/*.h deps/v8/include/*.h \
 	src/node.h src/node_buffer.h src/node_object_wrap.h src/node_version.h
 
 define run_build_addons
 env npm_config_loglevel=$(LOGLEVEL) npm_config_nodedir="$$PWD" \
-	npm_config_python="$(PYTHON)" $(NODE) "$$PWD/tools/build-addons" \
+	npm_config_python="$(PYTHON)" $(NODE) "$$PWD/tools/build-addons.mjs" \
 	"$$PWD/deps/npm/node_modules/node-gyp/bin/node-gyp.js" \
 	$1
 touch $2
diff --git a/doc/contributing/collaborator-guide.md b/doc/contributing/collaborator-guide.md
index 4550c2e7d1565c..546e0e71ba1372 100644
--- a/doc/contributing/collaborator-guide.md
+++ b/doc/contributing/collaborator-guide.md
@@ -232,7 +232,7 @@ There are some other files that touch the build chain. Changes in the following
 files also qualify as affecting the `node` binary:
 
 * `tools/*.py`
-* `tools/build-addons.js`
+* `tools/build-addons.mjs`
 * `*.gyp`
 * `*.gypi`
 * `configure`
diff --git a/tools/build-addons.js b/tools/build-addons.mjs
similarity index 62%
rename from tools/build-addons.js
rename to tools/build-addons.mjs
index 1d4bcbc917972c..a8d65f82e345ef 100644
--- a/tools/build-addons.js
+++ b/tools/build-addons.mjs
@@ -1,15 +1,15 @@
-'use strict';
+// Usage: e.g. node build-addons.mjs <path to node-gyp> <directory>
 
-// Usage: e.g. node build-addons.js <path to node-gyp> <directory>
-
-const child_process = require('child_process');
-const path = require('path');
-const fs = require('fs').promises;
-const util = require('util');
+import child_process from 'node:child_process';
+import path from 'node:path';
+import fs from 'node:fs/promises';
+import util from 'node:util';
+import process from 'node:process';
+import os from 'node:os';
 
 const execFile = util.promisify(child_process.execFile);
 
-const parallelization = +process.env.JOBS || require('os').cpus().length;
+const parallelization = +process.env.JOBS || os.cpus().length;
 const nodeGyp = process.argv[2];
 
 async function runner(directoryQueue) {
@@ -45,14 +45,11 @@ async function runner(directoryQueue) {
   return next();
 }
 
-async function main(directory) {
-  const directoryQueue = (await fs.readdir(directory))
-    .map((subdir) => path.join(directory, subdir));
-
-  const runners = [];
-  for (let i = 0; i < parallelization; ++i)
-    runners.push(runner(directoryQueue));
-  return Promise.all(runners);
-}
+const directory = process.argv[3];
+const directoryQueue = (await fs.readdir(directory))
+  .map((subdir) => path.join(directory, subdir));
 
-main(process.argv[3]).catch((err) => setImmediate(() => { throw err; }));
+const runners = [];
+for (let i = 0; i < parallelization; ++i)
+  runners.push(runner(directoryQueue));
+await Promise.all(runners);
diff --git a/vcbuild.bat b/vcbuild.bat
index 96306e407e1a19..49fa899de7178e 100644
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -608,7 +608,7 @@ if %errorlevel% neq 0 exit /b %errorlevel%
 :: building addons
 setlocal
 set npm_config_nodedir=%~dp0
-"%node_exe%" "%~dp0tools\build-addons.js" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\addons"
+"%node_exe%" "%~dp0tools\build-addons.mjs" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\addons"
 if errorlevel 1 exit /b 1
 endlocal
 
@@ -626,7 +626,7 @@ for /d %%F in (test\js-native-api\??_*) do (
 :: building js-native-api
 setlocal
 set npm_config_nodedir=%~dp0
-"%node_exe%" "%~dp0tools\build-addons.js" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\js-native-api"
+"%node_exe%" "%~dp0tools\build-addons.mjs" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\js-native-api"
 if errorlevel 1 exit /b 1
 endlocal
 goto build-node-api-tests
@@ -645,7 +645,7 @@ for /d %%F in (test\node-api\??_*) do (
 :: building node-api
 setlocal
 set npm_config_nodedir=%~dp0
-"%node_exe%" "%~dp0tools\build-addons.js" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\node-api"
+"%node_exe%" "%~dp0tools\build-addons.mjs" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\node-api"
 if errorlevel 1 exit /b 1
 endlocal
 goto run-tests