diff --git a/.gitignore b/.gitignore
index 3c3629e..f846c68 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 node_modules
+package-lock.json
+yarn.lock
diff --git a/index.js b/index.js
index 1906915..21778ae 100644
--- a/index.js
+++ b/index.js
@@ -1,7 +1,7 @@
 'use strict';
 const dargs = require('dargs');
 const execa = require('execa');
-const gutil = require('gulp-util');
+const PluginError = require('plugin-error');
 const through = require('through2');
 // TODO: Use execa localDir option when available
 const npmRunPath = require('npm-run-path');
@@ -43,7 +43,7 @@ module.exports = opts => {
 
 	function aggregate(file, encoding, done) {
 		if (file.isStream()) {
-			done(new gutil.PluginError('gulp-mocha', 'Streaming not supported'));
+			done(new PluginError('gulp-mocha', 'Streaming not supported'));
 			return;
 		}
 
@@ -64,7 +64,7 @@ module.exports = opts => {
 			done();
 		})
 			.catch(err => {
-				this.emit('error', new gutil.PluginError('gulp-mocha', err));
+				this.emit('error', new PluginError('gulp-mocha', err));
 				done();
 			});
 
diff --git a/package.json b/package.json
index 95b6d11..9b8f1b4 100644
--- a/package.json
+++ b/package.json
@@ -36,15 +36,16 @@
   "dependencies": {
     "dargs": "^5.1.0",
     "execa": "^0.6.0",
-    "gulp-util": "^3.0.0",
     "mocha": "^3.0.0",
     "npm-run-path": "^2.0.2",
+    "plugin-error": "^0.1.2",
     "through2": "^2.0.3"
   },
   "devDependencies": {
     "ava": "*",
     "gulp": "^3.9.1",
     "p-event": "^1.0.0",
+    "vinyl": "^2.1.0",
     "xo": "*"
   }
 }
diff --git a/test/test.js b/test/test.js
index a35ba8a..8589844 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,14 +1,14 @@
 import fs from 'fs';
 import path from 'path';
 import test from 'ava';
-import gutil from 'gulp-util';
+import Vinyl from 'vinyl';
 import pEvent from 'p-event';
 import mocha from '..';
 
 function fixture(name) {
 	const fileName = path.join(__dirname, 'fixtures', name);
 
-	return new gutil.File({
+	return new Vinyl({
 		path: fileName,
 		contents: fs.existsSync(fileName) ? fs.readFileSync(fileName) : null
 	});
@@ -33,9 +33,7 @@ test('pass async AssertionError to mocha', async t => {
 	const event = pEvent(stream, 'error');
 	stream.end(fixture('fixture-async.js'));
 	const error = await event;
-	const throws = /throws after timeout/.test(error.stdout);
-	const uncaught = /Uncaught AssertionError: false == true/.test(error.stdout);
-	t.true(throws || uncaught);
+	t.regex(error.stdout, /throws after timeout|Uncaught AssertionError.*: false == true/);
 });
 
 test('require two files', async t => {