diff --git a/lib/basics.js b/lib/basics.js
index 42335d8..e736e42 100644
--- a/lib/basics.js
+++ b/lib/basics.js
@@ -43,6 +43,6 @@ module.exports = {
   extends: ['plugin:node/recommended'],
   plugins: ['import', 'mocha', 'node', 'prettier'],
   parserOptions: {
-    ecmaVersion: 'latest',
+    ecmaVersion: 2020,
   },
 };