diff --git a/.gitignore b/.gitignore
index 5d151a10..cc99dbd8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 node_modules
 yarn.lock
 !test/fixtures/project/node_modules
+test/fixtures/project/node_modules/.cache
 .nyc_output
 coverage
diff --git a/config/plugins.js b/config/plugins.js
index 7f98d5fc..450eeda9 100644
--- a/config/plugins.js
+++ b/config/plugins.js
@@ -47,16 +47,24 @@ module.exports = {
 		'import/no-absolute-path': 'error',
 		'import/no-webpack-loader-syntax': 'error',
 		'import/no-self-import': 'error',
+
+		// Enable this sometime in the future when Node.js has ES2015 module support
+		// 'import/no-cycle': 'error'
+
 		'import/no-useless-path-segments': 'error',
 		'import/newline-after-import': 'error',
 		'import/no-amd': 'error',
 		'import/no-duplicates': 'error',
+
 		// Enable this sometime in the future when Node.js has ES2015 module support
 		// 'import/unambiguous': 'error',
-		// enable this sometime in the future when Node.js has ES2015 module support
+
+		// Enable this sometime in the future when Node.js has ES2015 module support
 		// 'import/no-commonjs': 'error',
+
 		// Looks useful, but too unstable at the moment
 		// 'import/no-deprecated': 'error',
+
 		'import/no-extraneous-dependencies': 'error',
 		'import/no-mutable-exports': 'error',
 		'import/no-named-as-default-member': 'error',
@@ -66,23 +74,32 @@ module.exports = {
 		'import/no-unassigned-import': ['error', {
 			allow: ['babel-polyfill', '@babel/polyfill', 'babel-register', '@babel/register']
 		}],
+
 		// Redundant with import/no-extraneous-dependencies
 		// 'node/no-extraneous-import': 'error',
 		// 'node/no-extraneous-require': 'error',
+
 		// Redundant with import/no-unresolved
 		// 'node/no-missing-import': 'error',
 		// 'node/no-missing-require': 'error',
+
 		'node/no-unpublished-bin': 'error',
+
 		// Disabled because they're too annoying, see:
 		// https://github.com/mysticatea/eslint-plugin-node/issues/105
 		// 'node/no-unpublished-import': ['error', {allowModules: ['electron', 'atom']}],
 		// 'node/no-unpublished-require': ['error', {allowModules: ['electron', 'atom']}],
+
 		// Disabled as the rule doesn't allow to exclude compiled sources
 		// 'node/no-unsupported-features': 'error',
+
 		'node/process-exit-as-throw': 'error',
+
 		// Disabled as the rule doesn't exclude scripts executed with `node` but not referenced in "bin". See https://github.com/mysticatea/eslint-plugin-node/issues/96
 		// 'node/shebang': 'error',
+
 		'node/no-deprecated-api': 'error'
+
 		// Disabled because it causes too much churn and will be moot when we switch to ES2015 modules
 		// 'node/exports-style': ['error', 'module.exports']
 	}
diff --git a/main.js b/main.js
index cf8657ed..5eca96a1 100755
--- a/main.js
+++ b/main.js
@@ -117,7 +117,7 @@ const {input, flags: opts} = cli;
 // Make data types for `opts.space` match those of the API
 // Check for string type because `xo --no-space` sets `opts.space` to `false`
 if (typeof opts.space === 'string') {
-	if (/^\d+$/.test(opts.space)) {
+	if (/^\d+$/u.test(opts.space)) {
 		opts.space = parseInt(opts.space, 10);
 	} else if (opts.space === 'true') {
 		opts.space = true;
diff --git a/package.json b/package.json
index 8d4e7b1a..b37a5466 100644
--- a/package.json
+++ b/package.json
@@ -53,17 +53,17 @@
 	"dependencies": {
 		"arrify": "^1.0.1",
 		"debug": "^3.1.0",
-		"eslint": "^5.2.0",
+		"eslint": "^5.3.0",
 		"eslint-config-prettier": "^2.9.0",
-		"eslint-config-xo": "^0.23.0",
+		"eslint-config-xo": "^0.24.1",
 		"eslint-formatter-pretty": "^1.3.0",
-		"eslint-plugin-ava": "^5.0.0",
-		"eslint-plugin-import": "^2.11.0",
+		"eslint-plugin-ava": "^5.1.0",
+		"eslint-plugin-import": "^2.13.0",
 		"eslint-plugin-no-use-extend-native": "^0.3.12",
 		"eslint-plugin-node": "^7.0.0",
 		"eslint-plugin-prettier": "^2.6.0",
-		"eslint-plugin-promise": "^3.7.0",
-		"eslint-plugin-unicorn": "^4.0.3",
+		"eslint-plugin-promise": "^3.8.0",
+		"eslint-plugin-unicorn": "^5.0.0",
 		"get-stdin": "^6.0.0",
 		"globby": "^8.0.0",
 		"has-flag": "^3.0.0",
@@ -85,10 +85,10 @@
 	"devDependencies": {
 		"ava": "*",
 		"coveralls": "^3.0.0",
-		"eslint-config-xo-react": "^0.16.0",
+		"eslint-config-xo-react": "^0.17.0",
 		"eslint-plugin-react": "^7.6.1",
 		"execa": "^0.10.0",
-		"nyc": "^11.4.1",
+		"nyc": "^12.0.2",
 		"pify": "^3.0.0",
 		"proxyquire": "^2.0.1",
 		"temp-write": "^3.4.0"
diff --git a/test/lint-text.js b/test/lint-text.js
index 7a8504b5..04ba21d5 100644
--- a/test/lint-text.js
+++ b/test/lint-text.js
@@ -74,7 +74,7 @@ test('`ignores` option without filename', t => {
 		fn.lintText(`'use strict'\nconsole.log('unicorn');\n`, {
 			ignores: ['ignored/**/*.js']
 		});
-	}, /The `ignores` option requires the `filename` option to be defined./);
+	}, /The `ignores` option requires the `filename` option to be defined./u);
 });
 
 test('JSX support', t => {
diff --git a/test/main.js b/test/main.js
index b55ab082..0f7385b2 100644
--- a/test/main.js
+++ b/test/main.js
@@ -27,7 +27,7 @@ test('stdin-filename option with stdin', async t => {
 		input: 'console.log()\n',
 		reject: false
 	});
-	t.regex(stdout, /unicorn-file:/);
+	t.regex(stdout, /unicorn-file:/u);
 });
 
 test('reporter option', async t => {
diff --git a/test/options-manager.js b/test/options-manager.js
index 577fec0c..1bfc7e17 100644
--- a/test/options-manager.js
+++ b/test/options-manager.js
@@ -42,7 +42,7 @@ test('normalizeOpts: falsie values stay falsie', t => {
 
 test('buildConfig: defaults', t => {
 	const config = manager.buildConfig({});
-	t.true(/[\\/]\.xo-cache[\\/]?$/.test(config.cacheLocation));
+	t.true(/[\\/]\.xo-cache[\\/]?$/u.test(config.cacheLocation));
 	t.is(config.useEslintrc, false);
 	t.is(config.cache, true);
 	t.is(config.baseConfig.extends[0], 'xo/esnext');