diff --git a/test/command-publish.test.js b/test/command-publish.test.js
index 40fb1ca..8d3c00e 100644
--- a/test/command-publish.test.js
+++ b/test/command-publish.test.js
@@ -467,14 +467,14 @@ test('publish a module minor editing the release message', async t => {
             return { arguments: [] }
           }
         },
-        child_process: {
+        'node:child_process': {
           spawn: () => {
             const e = new EventEmitter()
             setImmediate(() => { e.emit('exit', 0) })
             return e
           }
         },
-        fs: {
+        'node:fs': {
           readFile (tmpFile, opts, cb) {
             t.equal(tmpFile, fakeFile)
             cb(null, 'my message')
@@ -524,14 +524,14 @@ test('editor error', t => {
             return { arguments: [] }
           }
         },
-        child_process: {
+        'node:child_process': {
           spawn: () => {
             const e = new EventEmitter()
             setImmediate(() => { e.emit('exit', 1) })
             return e
           }
         },
-        fs: {
+        'node:fs': {
           readFile () { t.fail('The file has not been edited') }
         }
       })
diff --git a/test/helper.js b/test/helper.js
index a66aa50..afc4d7e 100644
--- a/test/helper.js
+++ b/test/helper.js
@@ -30,7 +30,7 @@ function buildProxyCommand (commandPath, opts = {}) {
       '@octokit/rest': factoryOctokit(opts.github)
     }),
     '../npm': proxyquire('../lib/npm', {
-      child_process: factoryNpm(opts.npm)
+      'node:child_process': factoryNpm(opts.npm)
     }),
     ...opts.external
   })