diff --git a/.github/workflows/cleanup.yml b/.github/workflows/cleanup.yml
index 300a303..65a586d 100644
--- a/.github/workflows/cleanup.yml
+++ b/.github/workflows/cleanup.yml
@@ -23,16 +23,18 @@ jobs:
 
       - uses: 'google-github-actions/setup-gcloud@v2' # ratchet:exclude
 
-      - name: Delete services
+      - name: 'Delete services'
+        env:
+          PROJECT_ID: '${{ vars.PROJECT_ID }}'
         run: |-
-          gcloud config set core/project "${{ vars.PROJECT_ID }}"
+          gcloud config set core/project "${PROJECT_ID}"
           gcloud config set functions/region "us-central1"
 
           # List and delete all functions that were deployed 30 minutes ago or
           # earlier. The date math here is a little weird, but we're looking for
           # deployments "earlier than" 30 minutes ago, so it's less than since
           # time increases.
-          (IFS=$'\n'; for NAME in $(gcloud functions list --format="value(name)" --filter="updateTime < '-pt30m'"); do
+          (IFS=$'\n'; for NAME in $(gcloud functions list --format='value(name)' --filter='updateTime < "-pt30m"'); do
             echo "Deleting ${NAME}..."
-            gcloud functions delete ${NAME} --quiet
+            gcloud functions delete "${NAME}" --quiet
           done)
diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index d9901b2..afe25a0 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -27,7 +27,7 @@ jobs:
 
       - uses: 'actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a' # ratchet:actions/setup-node@v4
         with:
-          node-version: '20.x'
+          node-version-file: 'package.json'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
@@ -57,7 +57,7 @@ jobs:
 
       - uses: 'actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a' # ratchet:actions/setup-node@v4
         with:
-          node-version: '20.x'
+          node-version-file: 'package.json'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index a5f9d29..ee07806 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -35,20 +35,15 @@ jobs:
 
       - uses: 'actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a' # ratchet:actions/setup-node@v4
         with:
-          node-version: '20.x'
+          node-version-file: 'package.json'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
 
-      - name: 'npm lint'
-        # There's no need to run the linter for each operating system, since it
-        # will find the same thing 3x and clog up the PR review.
-        if: ${{ matrix.os == 'ubuntu-latest' }}
-        run: 'npm run lint'
-
       - id: 'auth'
         uses: 'google-github-actions/auth@v2' # ratchet:exclude
-        if: ${{ github.event_name == 'push' || github.repository == github.event.pull_request.head.repo.full_name && github.actor != 'dependabot[bot]' }}
+        if: |-
+          ${{ github.event_name == 'push' || github.repository == github.event.pull_request.head.repo.full_name && github.actor != 'dependabot[bot]' }}
         with:
           project_id: '${{ vars.PROJECT_ID }}'
           workload_identity_provider: '${{ vars.WIF_PROVIDER_NAME }}'
diff --git a/bin/runTests.sh b/bin/runTests.sh
index 2c6c21e..c47d2f8 100644
--- a/bin/runTests.sh
+++ b/bin/runTests.sh
@@ -16,4 +16,6 @@ set -eEuo pipefail
 FILES="$(node -e "process.stdout.write(require('node:fs').readdirSync('./', { recursive: true }).filter((e) => {return e.endsWith('.test.ts') && !e.startsWith('node_modules');}).sort().join(' '));")"
 
 set -x
+
+# shellcheck disable=SC2086
 exec node --require ts-node/register --test-reporter spec --test ${FILES}
diff --git a/package.json b/package.json
index e724c76..6b02de5 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,10 @@
     "format": "eslint . --fix",
     "test": "bash ./bin/runTests.sh"
   },
+  "engines": {
+    "node": "20.x",
+    "npm": "10.x"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/google-github-actions/deploy-cloud-functions"

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