diff --git a/lib/options-manager.js b/lib/options-manager.js
index be3611cc..52e5e4ff 100644
--- a/lib/options-manager.js
+++ b/lib/options-manager.js
@@ -10,7 +10,6 @@ import prettier from 'prettier';
 import semver from 'semver';
 import {cosmiconfig, defaultLoaders} from 'cosmiconfig';
 import micromatch from 'micromatch';
-import JSON5 from 'json5';
 import stringify from 'json-stable-stringify-without-jsonify';
 import {Legacy} from '@eslint/eslintrc';
 import createEsmUtils from 'esm-utils';
@@ -159,21 +158,17 @@ const handleTSConfig = async options => {
 	options.tsConfig = {};
 	options.tsConfigPath = '';
 
-	const {project: tsConfigProjectPath, tsconfigRootDir} = options.parserOptions || {};
+	const {project: tsConfigProjectPath} = options.parserOptions || {};
 
 	if (tsConfigProjectPath) {
 		options.tsConfigPath = path.resolve(options.cwd, tsConfigProjectPath);
 		options.tsConfig = tsConfigResolvePaths(getTsconfig(options.tsConfigPath).config, options.tsConfigPath);
 	} else {
-		const tsConfigExplorer = cosmiconfig([], {
-			searchPlaces: ['tsconfig.json'],
-			loaders: {'.json': (_, content) => JSON5.parse(content)},
-			stopDir: tsconfigRootDir,
-		});
-		const searchResults = (await tsConfigExplorer.search(options.filePath)) || {};
-		options.tsConfigPath = searchResults.filepath;
+		const {config: tsConfig, path: filepath} = getTsconfig(options.filePath) || {};
+		options.tsConfigPath = filepath;
+		options.tsConfig = tsConfig;
 		if (options.tsConfigPath) {
-			options.tsConfig = tsConfigResolvePaths(getTsconfig(options.tsConfigPath).config, options.tsConfigPath);
+			options.tsConfig = tsConfigResolvePaths(tsConfig, options.tsConfigPath);
 		} else {
 			delete options.tsConfig;
 		}
diff --git a/package.json b/package.json
index be4674ee..de96cf1a 100644
--- a/package.json
+++ b/package.json
@@ -85,7 +85,6 @@
 		"globby": "^13.1.2",
 		"imurmurhash": "^0.1.4",
 		"json-stable-stringify-without-jsonify": "^1.0.1",
-		"json5": "^2.2.1",
 		"lodash-es": "^4.17.21",
 		"meow": "^11.0.0",
 		"micromatch": "^4.0.5",
@@ -94,7 +93,8 @@
 		"semver": "^7.3.8",
 		"slash": "^5.0.0",
 		"to-absolute-glob": "^2.0.2",
-		"typescript": "^5.0.3"
+		"typescript": "^5.0.3",
+		"xo": "file:./index.js"
 	},
 	"devDependencies": {
 		"ava": "^5.1.0",