diff --git a/wai-server/.eslintrc.js b/wai-server/.eslintrc.js
index 2054831..4c05ba1 100644
--- a/wai-server/.eslintrc.js
+++ b/wai-server/.eslintrc.js
@@ -3,13 +3,12 @@ module.exports = {
     browser: true,
     commonjs: true,
     es6: true,
-    es2021: true,
     'jest/globals': true,
   },
   extends: ['standard', 'plugin:prettier/recommended'],
   plugins: ['prettier', 'jest'],
   parserOptions: {
-    ecmaVersion: 'latest',
+    ecmaVersion: 2019,
     sourceType: 'module',
   },
   rules: {