diff --git a/package.json b/package.json
index e4e66bc183..53153f5ba0 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "proxyquire": "^2.0.0",
     "sinon": "^6.0.0",
     "tempy": "^0.2.1",
-    "xo": "^0.21.0"
+    "xo": "^0.22.0"
   },
   "engines": {
     "node": ">=8.3"
diff --git a/test/fixtures/index.js b/test/fixtures/index.js
index 3246d10005..cc40a4649c 100644
--- a/test/fixtures/index.js
+++ b/test/fixtures/index.js
@@ -1,2 +1 @@
 module.exports = () => {};
-
diff --git a/test/fixtures/plugin-error-inherited.js b/test/fixtures/plugin-error-inherited.js
index bcc5a3e5cd..b5a592ed62 100644
--- a/test/fixtures/plugin-error-inherited.js
+++ b/test/fixtures/plugin-error-inherited.js
@@ -1,7 +1,7 @@
 const SemanticReleaseError = require('@semantic-release/error');
 
 class InheritedError extends SemanticReleaseError {
-  constructor(message, code, newProperty) {
+  constructor(message, code) {
     super(message);
     Error.captureStackTrace(this, this.constructor);
     this.name = this.constructor.name;