diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0dc4e9d..5d6a972 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,12 +11,13 @@ jobs:
         os: [windows-latest, ubuntu-latest, macos-latest]
         node-version: [lts/gallium, lts/fermium]
     steps:
-      - uses: actions/checkout@v3
-      - name: Use Node.js LTS versions (v10-v16)
-        uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: yarn
+          architecture: x64
       - run: yarn --frozen-lockfile --network-timeout 1000000
         env:
           CI: true
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..ae96860
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+nodejs 16.20.2
diff --git a/package.json b/package.json
index 2bfef49..b5ba610 100644
--- a/package.json
+++ b/package.json
@@ -53,6 +53,17 @@
   "license": "ISC",
   "main": "lib/index.js",
   "repository": "heroku/heroku-cli-command",
+  "mocha": {
+    "require": [
+      "test/helpers/init.js",
+      "ts-node/register",
+      "source-map-support/register"
+    ],
+    "watch-extensions": "ts",
+    "recursive": true,
+    "reporter": "spec",
+    "timeout": 360000
+  },
   "scripts": {
     "build": "rm -rf lib && tsc",
     "lint": "tsc -p test --noEmit && tslint -p test -t stylish",
diff --git a/test/mocha.opts b/test/mocha.opts
deleted file mode 100644
index ccc7f34..0000000
--- a/test/mocha.opts
+++ /dev/null
@@ -1,7 +0,0 @@
---require test/helpers/init.js
---require ts-node/register
---require source-map-support/register
---watch-extensions ts
---recursive
---reporter spec
---timeout 5000