diff --git a/.travis.yml b/.travis.yml
index 868f4373..15100f14 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 language: node_js
 
 node_js:
+  - 12
   - 10
-  - 8
+  - 8.3
 
 # Trigger a push build on release and greenkeeper branches + PRs build on every branches
 # Avoid double build on PRs (See https://github.com/travis-ci/travis-ci/issues/1147)
diff --git a/lib/git.js b/lib/git.js
index 43e143aa..8340946d 100644
--- a/lib/git.js
+++ b/lib/git.js
@@ -11,7 +11,7 @@ const debug = require('debug')('semantic-release:git');
  */
 async function filterModifiedFiles(files, execaOpts) {
   return files.length > 0
-    ? (await execa.stdout('git', ['ls-files', '-m', '-o', ...files], execaOpts))
+    ? (await execa('git', ['ls-files', '-m', '-o', ...files], execaOpts)).stdout
         .split('\n')
         .map(file => file.trim())
         .filter(file => Boolean(file))
@@ -61,8 +61,8 @@ async function push(origin, branch, execaOpts) {
  *
  * @return {String} The sha of the head commit on the local repository
  */
-function gitHead(execaOpts) {
-  return execa.stdout('git', ['rev-parse', 'HEAD'], execaOpts);
+async function gitHead(execaOpts) {
+  return (await execa('git', ['rev-parse', 'HEAD'], execaOpts)).stdout;
 }
 
 module.exports = {filterModifiedFiles, add, gitHead, commit, push};
diff --git a/package.json b/package.json
index 159328e1..09e97a0a 100644
--- a/package.json
+++ b/package.json
@@ -3,44 +3,45 @@
   "description": "semantic-release plugin to commit release assets to the project's git repository",
   "version": "0.0.0-development",
   "author": "Pierre Vanduynslager (https://github.com/pvdlg)",
+  "ava": {
+    "files": [
+      "test/**/*.test.js"
+    ],
+    "helpers": [
+      "test/helpers/**/*"
+    ]
+  },
   "bugs": {
     "url": "https://github.com/semantic-release/git/issues"
   },
-  "config": {
-    "commitizen": {
-      "path": "cz-conventional-changelog"
-    }
-  },
   "contributors": [
     "Stephan Bönnemann <stephan@boennemann.me> (http://boennemann.me)",
     "Gregor Martynus (https://twitter.com/gr2m)"
   ],
   "dependencies": {
     "@semantic-release/error": "^2.1.0",
-    "aggregate-error": "^2.0.0",
+    "aggregate-error": "^3.0.0",
     "debug": "^4.0.0",
-    "dir-glob": "^2.0.0",
+    "dir-glob": "^3.0.0",
     "execa": "^1.0.0",
-    "fs-extra": "^7.0.0",
-    "globby": "^9.0.0",
+    "fs-extra": "^8.0.0",
+    "globby": "^10.0.0",
     "lodash": "^4.17.4",
-    "micromatch": "^3.1.4",
-    "p-reduce": "^1.0.0"
+    "micromatch": "^4.0.0",
+    "p-reduce": "^2.0.0"
   },
   "devDependencies": {
-    "ava": "^1.0.1",
-    "clear-module": "^3.0.0",
+    "ava": "^2.0.0",
+    "clear-module": "^4.0.0",
     "codecov": "^3.0.0",
-    "commitizen": "^3.0.0",
-    "cz-conventional-changelog": "^2.0.0",
-    "file-url": "^2.0.2",
-    "get-stream": "^4.0.0",
+    "file-url": "^3.0.0",
+    "get-stream": "^5.0.0",
     "git-log-parser": "^1.2.0",
-    "nyc": "^13.1.0",
+    "nyc": "^14.0.0",
     "semantic-release": "^16.0.0-beta",
     "sinon": "^7.1.1",
-    "tempy": "^0.2.1",
-    "xo": "^0.24.0"
+    "tempy": "^0.3.0",
+    "xo": "^0.25.2"
   },
   "engines": {
     "node": ">=8.3"
@@ -89,7 +90,6 @@
     "url": "https://github.com/semantic-release/git.git"
   },
   "scripts": {
-    "cm": "git-cz",
     "codecov": "codecov -f coverage/coverage-final.json",
     "lint": "xo",
     "pretest": "npm run lint",
diff --git a/test/git.test.js b/test/git.test.js
index 9353f855..6c5d927b 100644
--- a/test/git.test.js
+++ b/test/git.test.js
@@ -94,5 +94,5 @@ test('Push commit to remote repository', async t => {
 
   await push(repositoryUrl, 'master', {cwd});
 
-  t.is(await gitRemoteHead(repositoryUrl), hash, {cwd});
+  t.is(await gitRemoteHead(repositoryUrl, {cwd}), hash);
 });
diff --git a/test/helpers/git-utils.js b/test/helpers/git-utils.js
index e6a693f3..bc06b373 100644
--- a/test/helpers/git-utils.js
+++ b/test/helpers/git-utils.js
@@ -60,8 +60,10 @@ export async function initBareRepo(repositoryUrl, branch = 'master') {
  * @returns {Array<Commit>} The created commits, in reverse order (to match `git log` order).
  */
 export async function gitCommits(messages, execaOpts) {
-  await pReduce(messages, (_, message) =>
-    execa.stdout('git', ['commit', '-m', message, '--allow-empty', '--no-gpg-sign'], execaOpts)
+  await pReduce(
+    messages,
+    async (_, message) =>
+      (await execa('git', ['commit', '-m', message, '--allow-empty', '--no-gpg-sign'], execaOpts)).stdout
   );
   return (await gitGetCommits(undefined, execaOpts)).slice(0, messages.length);
 }
@@ -89,10 +91,10 @@ export async function gitGetCommits(from, execaOpts) {
  * Checkout a branch on the current git repository.
  *
  * @param {String} branch Branch name.
- * @param {Boolean} create `true` to create the branch, `false` to checkout an existing branch.
+ * @param {Boolean} create to create the branch, `false` to checkout an existing branch.
  * @param {Object} [execaOpts] Options to pass to `execa`.
  */
-export async function gitCheckout(branch, create = true, execaOpts) {
+export async function gitCheckout(branch, create, execaOpts) {
   await execa('git', create ? ['checkout', '-b', branch] : ['checkout', branch], execaOpts);
 }
 
@@ -151,7 +153,7 @@ export async function gitDetachedHead(repositoryUrl, head) {
  * @return {String} The HEAD sha of the remote repository.
  */
 export async function gitRemoteHead(repositoryUrl, execaOpts) {
-  return (await execa.stdout('git', ['ls-remote', repositoryUrl, 'HEAD'], execaOpts))
+  return (await execa('git', ['ls-remote', repositoryUrl, 'HEAD'], execaOpts)).stdout
     .split('\n')
     .filter(head => Boolean(head))
     .map(head => head.match(/^(\S+)/)[1])[0];
@@ -165,7 +167,7 @@ export async function gitRemoteHead(repositoryUrl, execaOpts) {
  * @return {Array<String>} Array of staged files path.
  */
 export async function gitStaged(execaOpts) {
-  return (await execa.stdout('git', ['status', '--porcelain'], execaOpts))
+  return (await execa('git', ['status', '--porcelain'], execaOpts)).stdout
     .split('\n')
     .filter(status => status.startsWith('A '))
     .map(status => status.match(/^A\s+(.+)$/)[1]);
@@ -174,13 +176,13 @@ export async function gitStaged(execaOpts) {
 /**
  * Get the list of files included in a commit.
  *
- * @param {String} [ref='HEAD'] The git reference for which to retrieve the files.
+ * @param {String} ref The git reference for which to retrieve the files.
  * @param {Object} [execaOpts] Options to pass to `execa`.
  *
  * @return {Array<String>} The list of files path included in the commit.
  */
-export async function gitCommitedFiles(ref = 'HEAD', execaOpts) {
-  return (await execa.stdout('git', ['diff-tree', '-r', '--name-only', '--no-commit-id', '-r', ref], execaOpts))
+export async function gitCommitedFiles(ref, execaOpts) {
+  return (await execa('git', ['diff-tree', '-r', '--name-only', '--no-commit-id', '-r', ref], execaOpts)).stdout
     .split('\n')
     .filter(file => Boolean(file));
 }