diff --git a/lib/web/fetch/headers.js b/lib/web/fetch/headers.js
index b849b0e356c..2235f125c65 100644
--- a/lib/web/fetch/headers.js
+++ b/lib/web/fetch/headers.js
@@ -12,7 +12,7 @@ const {
 } = require('./util')
 const { webidl } = require('./webidl')
 const assert = require('node:assert')
-const util = require('util')
+const util = require('node:util')
 
 const kHeadersMap = Symbol('headers map')
 const kHeadersSortedMap = Symbol('headers map sorted')
diff --git a/test/fetch/headers-inspect-custom.js b/test/fetch/headers-inspect-custom.js
index 1aa3326e98c..8145e9d7536 100644
--- a/test/fetch/headers-inspect-custom.js
+++ b/test/fetch/headers-inspect-custom.js
@@ -3,7 +3,7 @@
 const { Headers } = require('../../lib/web/fetch/headers')
 const { test } = require('node:test')
 const assert = require('node:assert')
-const util = require('util')
+const util = require('node:util')
 
 test('Headers class custom inspection', () => {
   const headers = new Headers()
diff --git a/test/fetch/request-inspect-custom.js b/test/fetch/request-inspect-custom.js
index 7cb7fc73152..e2e60bdab7b 100644
--- a/test/fetch/request-inspect-custom.js
+++ b/test/fetch/request-inspect-custom.js
@@ -1,8 +1,8 @@
 'use strict'
 
 const { describe, it } = require('node:test')
-const assert = require('assert')
-const util = require('util')
+const assert = require('node:assert')
+const util = require('node:util')
 const { Request } = require('../../')
 
 describe('Request custom inspection', () => {
diff --git a/test/fetch/response-inspect-custom.js b/test/fetch/response-inspect-custom.js
index bf72a053a6e..ca8a5a0fc1a 100644
--- a/test/fetch/response-inspect-custom.js
+++ b/test/fetch/response-inspect-custom.js
@@ -1,8 +1,8 @@
 'use strict'
 
 const { describe, it } = require('node:test')
-const assert = require('assert')
-const util = require('util')
+const assert = require('node:assert')
+const util = require('node:util')
 const { Response } = require('../../')
 
 describe('Response custom inspection', () => {