diff --git a/package.json b/package.json
index 276bb05..f918e2a 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "eslint-plugin-prettier": "^2.3.0",
     "nock": "^9.0.22",
     "nyc": "^11.2.1",
-    "prettier": "~1.9.0",
+    "prettier": "~1.9.2",
     "proxyquire": "^1.7.1",
     "semantic-release": "^10.0.0",
     "sinon": "^4.0.0",
diff --git a/test/helpers/mock-github.js b/test/helpers/mock-github.js
index dbac387..ed76c50 100644
--- a/test/helpers/mock-github.js
+++ b/test/helpers/mock-github.js
@@ -1,7 +1,9 @@
 import nock from 'nock';
 
-export default function authenticate(
-  {githubToken = 'GH_TOKEN', githubUrl = 'https://api.github.com', githubApiPathPrefix = ''} = {}
-) {
+export default function authenticate({
+  githubToken = 'GH_TOKEN',
+  githubUrl = 'https://api.github.com',
+  githubApiPathPrefix = '',
+} = {}) {
   return nock(`${githubUrl}/${githubApiPathPrefix}`, {reqheaders: {authorization: `token ${githubToken}`}});
 }