diff --git a/__tests__/registries/npm-registry.js b/__tests__/registries/npm-registry.js
index e9deb193e1..6f7551174f 100644
--- a/__tests__/registries/npm-registry.js
+++ b/__tests__/registries/npm-registry.js
@@ -7,8 +7,8 @@ import {BufferReporter} from '../../src/reporters/index.js';
 import homeDir, {home} from '../../src/util/user-home-dir.js';
 
 function basicAuth(username, password): string {
-  const pw = new Buffer(String(password), 'base64').toString();
-  return new Buffer(String(username) + ':' + pw).toString('base64');
+  const pw = Buffer.from(String(password), 'base64').toString();
+  return Buffer.from(String(username) + ':' + pw).toString('base64');
 }
 
 describe('normalizeConfig', () => {