diff --git a/configs/base.js b/configs/base.js
index 8071bb108c..0a6b7bf164 100644
--- a/configs/base.js
+++ b/configs/base.js
@@ -4,7 +4,7 @@ module.exports = {
 		es6: true,
 	},
 	parserOptions: {
-		ecmaVersion: 2021,
+		ecmaVersion: 'latest',
 		sourceType: 'module',
 	},
 	plugins: [
diff --git a/package.json b/package.json
index 68dc99f4cf..420b191b40 100644
--- a/package.json
+++ b/package.json
@@ -57,9 +57,9 @@
 	"devDependencies": {
 		"@babel/code-frame": "^7.14.5",
 		"@babel/core": "^7.15.5",
-		"@babel/eslint-parser": "^7.15.4",
+		"@babel/eslint-parser": "^7.15.7",
 		"@lubien/fixture-beta-package": "^1.0.0-beta.1",
-		"@typescript-eslint/parser": "^4.31.0",
+		"@typescript-eslint/parser": "^4.32.0",
 		"ava": "^3.15.0",
 		"chalk": "^4.1.2",
 		"enquirer": "2.3.6",
diff --git a/readme.md b/readme.md
index 9069dea413..38a8e72eda 100644
--- a/readme.md
+++ b/readme.md
@@ -28,7 +28,7 @@ Configure it in `package.json`.
 			"es6": true
 		},
 		"parserOptions": {
-			"ecmaVersion": 2021,
+			"ecmaVersion": "latest",
 			"sourceType": "module"
 		},
 		"plugins": [
diff --git a/test/consistent-function-scoping.mjs b/test/consistent-function-scoping.mjs
index cc089e2fb7..a08deef7fa 100644
--- a/test/consistent-function-scoping.mjs
+++ b/test/consistent-function-scoping.mjs
@@ -16,8 +16,6 @@ const createError = (functionNameWithKind, loc) => ({
 test({
 	testerOptions: {
 		parserOptions: {
-			sourceType: 'module',
-			ecmaVersion: 2021,
 			ecmaFeatures: {
 				jsx: true,
 			},
diff --git a/test/integration/config.js b/test/integration/config.js
index 69b6b44e85..d9af78bf98 100644
--- a/test/integration/config.js
+++ b/test/integration/config.js
@@ -4,10 +4,6 @@ module.exports = {
 	root: true,
 	parser: '@babel/eslint-parser',
 	parserOptions: {
-		ecmaVersion: 2021,
-		ecmaFeatures: {
-			jsx: true,
-		},
 		requireConfigFile: false,
 		babelOptions: {
 			babelrc: false,
diff --git a/test/integration/projects.mjs b/test/integration/projects.mjs
index c27baa88ef..3883e33faf 100644
--- a/test/integration/projects.mjs
+++ b/test/integration/projects.mjs
@@ -88,8 +88,8 @@ export default [
 	// 		'build/**'
 	// 	]
 	// },
-	'https://github.com/ElemeFE/element',
-	'https://github.com/iview/iview',
+	// 'https://github.com/ElemeFE/element',
+	// 'https://github.com/iview/iview',
 	'https://github.com/sindresorhus/create-dmg',
 	'https://github.com/sindresorhus/cp-file',
 	'https://github.com/sindresorhus/capture-website',
diff --git a/test/no-for-loop.mjs b/test/no-for-loop.mjs
index 145ee8ae93..424b73ad62 100644
--- a/test/no-for-loop.mjs
+++ b/test/no-for-loop.mjs
@@ -731,6 +731,7 @@ test({
 test(avoidTestTitleConflict({
 	testerOptions: {
 		parserOptions: {
+			sourceType: 'script',
 			ecmaVersion: 5,
 		},
 	},
diff --git a/test/no-keyword-prefix.mjs b/test/no-keyword-prefix.mjs
index cfce5742d3..e51ad3928d 100644
--- a/test/no-keyword-prefix.mjs
+++ b/test/no-keyword-prefix.mjs
@@ -228,12 +228,10 @@ test({
 		},
 		{
 			code: 'function foo({ newBar = \'default value\' }) {};',
-			parserOptions: {ecmaVersion: 6},
 			errors: [errorNew],
 		},
 		{
 			code: 'const newFoo = 0; function foo({ newBar = newFoo}) {}',
-			parserOptions: {ecmaVersion: 6},
 			errors: [errorNew, errorNew],
 		},
 		{
diff --git a/test/prevent-abbreviations.mjs b/test/prevent-abbreviations.mjs
index 91fc984136..913625f268 100644
--- a/test/prevent-abbreviations.mjs
+++ b/test/prevent-abbreviations.mjs
@@ -1271,6 +1271,7 @@ test.typescript(avoidTestTitleConflict(tests, 'typescript'));
 test({
 	testerOptions: {
 		parserOptions: {
+			sourceType: 'script',
 			ecmaVersion: 5,
 		},
 		env: {
diff --git a/test/smoke/eslint-remote-tester.config.js b/test/smoke/eslint-remote-tester.config.js
index fe942813be..0666d87355 100644
--- a/test/smoke/eslint-remote-tester.config.js
+++ b/test/smoke/eslint-remote-tester.config.js
@@ -29,7 +29,7 @@ module.exports = {
 		},
 		parser: '@typescript-eslint/parser',
 		parserOptions: {
-			ecmaVersion: 2020,
+			ecmaVersion: 'latest',
 			sourceType: 'module',
 			ecmaFeatures: {
 				jsx: true,
diff --git a/test/utils/parsers.mjs b/test/utils/parsers.mjs
index 1924e91634..5d4b0dde8c 100644
--- a/test/utils/parsers.mjs
+++ b/test/utils/parsers.mjs
@@ -59,10 +59,18 @@ const vue = {
 		return require.resolve(this.name);
 	},
 	mergeParserOptions(options) {
-		return {
+		options = {
 			...defaultParserOptions,
 			...options,
 		};
+
+		// The `espree` version in `vue-eslint-parser` does not understand `'latest'` yet.
+		// https://github.com/vuejs/vue-eslint-parser/pull/113
+		if (options.ecmaVersion === 'latest') {
+			options.ecmaVersion = require('espree').latestEcmaVersion;
+		}
+
+		return options;
 	},
 };
 
diff --git a/test/utils/test.mjs b/test/utils/test.mjs
index 0fcc5a318e..303844d562 100644
--- a/test/utils/test.mjs
+++ b/test/utils/test.mjs
@@ -59,10 +59,13 @@ class Tester {
 	}
 
 	runTest(tests) {
-		const {beforeAll, testerOptions, valid, invalid} = tests;
+		const {beforeAll, testerOptions = {}, valid, invalid} = tests;
 		const tester = avaRuleTester(test, {
-			parserOptions: defaultParserOptions,
 			...testerOptions,
+			parserOptions: {
+				...defaultParserOptions,
+				...testerOptions.parserOptions,
+			},
 		});
 
 		if (beforeAll) {