diff --git a/.taprc b/.taprc
deleted file mode 100644
index 7695d35..0000000
--- a/.taprc
+++ /dev/null
@@ -1,2 +0,0 @@
-files:
-  - test/**/*.test.js
\ No newline at end of file
diff --git a/package.json b/package.json
index 1ca9a91..dc2a379 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "lint": "standard",
     "lint:fix": "standard --fix",
     "test": "npm run test:unit && npm run test:typescript",
-    "test:unit": "tap",
+    "test:unit": "c8 node --test",
     "test:typescript": "tsd"
   },
   "repository": {
@@ -30,8 +30,8 @@
   "homepage": "https://github.com/fastify/fastify-error#readme",
   "devDependencies": {
     "benchmark": "^2.1.4",
+    "c8": "^10.1.2",
     "standard": "^17.1.0",
-    "tap": "^18.7.1",
     "tsd": "^0.31.0"
   },
   "tsd": {
diff --git a/test/index.test.js b/test/index.test.js
index 2fabd6f..b650ba5 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -1,40 +1,40 @@
 'use strict'
 
-const { test } = require('tap')
+const test = require('node:test')
 const createError = require('..')
 
-test('Create error with zero parameter', t => {
+test('Create error with zero parameter', (t) => {
   t.plan(6)
 
   const NewError = createError('CODE', 'Not available')
   const err = new NewError()
-  t.ok(err instanceof Error)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'Not available')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.equal(err.message, 'Not available')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create error with 1 parameter', t => {
+test('Create error with 1 parameter', (t) => {
   t.plan(6)
 
   const NewError = createError('CODE', 'hey %s')
   const err = new NewError('alice')
-  t.ok(err instanceof Error)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'hey alice')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.message, 'hey alice')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create error with 1 parameter set to undefined', t => {
+test('Create error with 1 parameter set to undefined', (t) => {
   t.plan(1)
 
   const NewError = createError('CODE', 'hey %s')
   const err = new NewError(undefined)
-  t.equal(err.message, 'hey undefined')
+  t.assert.equal(err.message, 'hey undefined')
 })
 
 test('Create error with 2 parameters', (t) => {
@@ -42,143 +42,152 @@ test('Create error with 2 parameters', (t) => {
 
   const NewError = createError('CODE', 'hey %s, I like your %s')
   const err = new NewError('alice', 'attitude')
-  t.ok(err instanceof Error)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'hey alice, I like your attitude')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.equal(err.message, 'hey alice, I like your attitude')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create error with 2 parameters set to undefined', t => {
+test('Create error with 2 parameters set to undefined', (t) => {
   t.plan(1)
 
   const NewError = createError('CODE', 'hey %s, I like your %s')
   const err = new NewError(undefined, undefined)
-  t.equal(err.message, 'hey undefined, I like your undefined')
+  t.assert.equal(err.message, 'hey undefined, I like your undefined')
 })
 
-test('Create error with 3 parameters', t => {
+test('Create error with 3 parameters', (t) => {
   t.plan(6)
 
   const NewError = createError('CODE', 'hey %s, I like your %s %s')
   const err = new NewError('alice', 'attitude', 'see you')
-  t.ok(err instanceof Error)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'hey alice, I like your attitude see you')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.equal(err.message, 'hey alice, I like your attitude see you')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create error with 3 parameters set to undefined', t => {
+test('Create error with 3 parameters set to undefined', (t) => {
   t.plan(4)
 
   const NewError = createError('CODE', 'hey %s, I like your %s %s')
   const err = new NewError(undefined, undefined, undefined)
-  t.equal(err.message, 'hey undefined, I like your undefined undefined')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.equal(err.message, 'hey undefined, I like your undefined undefined')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create error with 4 parameters set to undefined', t => {
+test('Create error with 4 parameters set to undefined', (t) => {
   t.plan(4)
 
   const NewError = createError('CODE', 'hey %s, I like your %s %s and %s')
   const err = new NewError(undefined, undefined, undefined, undefined)
-  t.equal(err.message, 'hey undefined, I like your undefined undefined and undefined')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.equal(
+    err.message,
+    'hey undefined, I like your undefined undefined and undefined'
+  )
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create error with no statusCode property', t => {
+test('Create error with no statusCode property', (t) => {
   t.plan(6)
 
   const NewError = createError('CODE', 'hey %s', 0)
   const err = new NewError('dude')
-  t.ok(err instanceof Error)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'hey dude')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, undefined)
-  t.ok(err.stack)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.equal(err.message, 'hey dude')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, undefined)
+  t.assert.ok(err.stack)
 })
 
-test('Should throw when error code has no fastify code', t => {
+test('Should throw when error code has no fastify code', (t) => {
   t.plan(1)
-
-  t.throws(() => createError(), new Error('Fastify error code must not be empty'))
+  t.assert.throws(
+    () => createError(),
+    new Error('Fastify error code must not be empty')
+  )
 })
 
-test('Should throw when error code has no message', t => {
-  t.plan(1)
-
-  t.throws(() => createError('code'), new Error('Fastify error message must not be empty'))
+test('Should throw when error code has no message', (t) => {
+  t.assert.throws(
+    () => createError('code'),
+    new Error('Fastify error message must not be empty')
+  )
 })
 
-test('Create error with different base', t => {
+test('Create error with different base', (t) => {
   t.plan(7)
 
   const NewError = createError('CODE', 'hey %s', 500, TypeError)
   const err = new NewError('dude')
-  t.ok(err instanceof Error)
-  t.ok(err instanceof TypeError)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'hey dude')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.ok(err instanceof Error)
+  t.assert.ok(err instanceof TypeError)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.equal(err.message, 'hey dude')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('FastifyError.toString returns code', t => {
+test('FastifyError.toString returns code', (t) => {
   t.plan(1)
 
   const NewError = createError('CODE', 'foo')
   const err = new NewError()
-  t.equal(err.toString(), 'FastifyError [CODE]: foo')
+  t.assert.equal(err.toString(), 'FastifyError [CODE]: foo')
 })
 
-test('Create the error without the new keyword', t => {
+test('Create the error without the new keyword', (t) => {
   t.plan(6)
 
   const NewError = createError('CODE', 'Not available')
   const err = NewError()
-  t.ok(err instanceof Error)
-  t.equal(err.name, 'FastifyError')
-  t.equal(err.message, 'Not available')
-  t.equal(err.code, 'CODE')
-  t.equal(err.statusCode, 500)
-  t.ok(err.stack)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.name, 'FastifyError')
+  t.assert.equal(err.message, 'Not available')
+  t.assert.equal(err.code, 'CODE')
+  t.assert.equal(err.statusCode, 500)
+  t.assert.ok(err.stack)
 })
 
-test('Create an error with cause', t => {
+test('Create an error with cause', (t) => {
   t.plan(2)
+
   const cause = new Error('HEY')
   const NewError = createError('CODE', 'Not available')
   const err = NewError({ cause })
 
-  t.ok(err instanceof Error)
-  t.equal(err.cause, cause)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.cause, cause)
 })
 
-test('Create an error with cause and message', t => {
+test('Create an error with cause and message', (t) => {
   t.plan(2)
+
   const cause = new Error('HEY')
   const NewError = createError('CODE', 'Not available: %s')
   const err = NewError('foo', { cause })
 
-  t.ok(err instanceof Error)
-  t.equal(err.cause, cause)
+  t.assert.ok(err instanceof Error)
+  t.assert.equal(err.cause, cause)
 })
 
-test('Create an error with last argument null', t => {
+test('Create an error with last argument null', (t) => {
   t.plan(2)
+
   const cause = new Error('HEY')
   const NewError = createError('CODE', 'Not available')
   const err = NewError({ cause }, null)
 
-  t.ok(err instanceof Error)
-  t.notOk(err.cause)
+  t.assert.ok(err instanceof Error)
+  t.assert.ifError(err.cause)
 })