diff --git a/.github/workflows/cleanup.yml b/.github/workflows/cleanup.yml
index bbcd9e4f..374acbcd 100644
--- a/.github/workflows/cleanup.yml
+++ b/.github/workflows/cleanup.yml
@@ -26,15 +26,17 @@ jobs:
           version: 'latest'
 
       - 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 run/region "us-central1"
 
           # List and delete all services 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 $(gcloud run services list --format="value(name)" --filter="metadata.creationTimestamp < '-pt30m'"); do
+          (IFS=$'\n'; for NAME in $(gcloud run services list --format='value(name)' --filter='metadata.creationTimestamp < "-pt30m"'); do
             echo "Deleting ${NAME}..."
-            gcloud run services delete ${NAME} --quiet --async
+            gcloud run services delete "${NAME}" --quiet --async
           done)
diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 890577e1..12b8b569 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -38,12 +38,14 @@ jobs:
       - uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
 
       - name: 'Compute service name'
+        env:
+          MATRIX_NAME: '${{ matrix.name }}'
         run: |-
-          echo "SERVICE_NAME=${GITHUB_JOB}-${{ matrix.name }}-${GITHUB_SHA::7}-${GITHUB_RUN_NUMBER}" >> ${GITHUB_ENV}
+          echo "SERVICE_NAME=${GITHUB_JOB}-${MATRIX_NAME}-${GITHUB_SHA::7}-${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
 
       - uses: 'actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a' # ratchet:actions/setup-node@v4
         with:
-          node-version: '20.12.x' # https://github.com/nodejs/node/issues/53033
+          node-version-file: 'package.json'
 
       - run: 'npm ci && npm run build'
 
@@ -75,7 +77,7 @@ jobs:
       - name: 'Run initial deploy tests'
         run: 'npm run e2e-tests'
         env:
-          PROJECT_ID: ${{ vars.PROJECT_ID }}
+          PROJECT_ID: '${{ vars.PROJECT_ID }}'
           SERVICE: '${{ env.SERVICE_NAME }}'
           ENV: |-
             {
@@ -111,14 +113,14 @@ jobs:
             ABC=123
             DEF=456
           env_vars_update_strategy: 'overwrite'
-          secrets: /api/secrets/my-secret=${{ vars.SECRET_NAME }}:latest
+          secrets: '/api/secrets/my-secret=${{ vars.SECRET_NAME }}:latest'
           secrets_update_strategy: 'overwrite'
-          to_revision: 'LATEST=100'
+          revision_traffic: 'LATEST=100'
 
       - name: 'Run re-deploy tests'
         run: 'npm run e2e-tests'
         env:
-          PROJECT_ID: ${{ vars.PROJECT_ID }}
+          PROJECT_ID: '${{ vars.PROJECT_ID }}'
           SERVICE: '${{ env.SERVICE_NAME }}'
           ENV: |-
             {
@@ -153,7 +155,7 @@ jobs:
 
       - name: 'Compute service name'
         run: |-
-          echo "SERVICE_NAME=${GITHUB_JOB}-metadata-${GITHUB_SHA::7}-${GITHUB_RUN_NUMBER}" >> ${GITHUB_ENV}
+          echo "SERVICE_NAME=${GITHUB_JOB}-metadata-${GITHUB_SHA::7}-${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
 
       - name: 'Set service name in metadata YAML'
         run: |-
@@ -161,7 +163,7 @@ jobs:
 
       - uses: 'actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a' # ratchet:actions/setup-node@v4
         with:
-          node-version: '20.12.x' # https://github.com/nodejs/node/issues/53033
+          node-version-file: 'package.json'
 
       - run: 'npm ci && npm run build'
 
@@ -202,7 +204,7 @@ jobs:
         with:
           image: 'gcr.io/cloudrun/hello'
           service: '${{ env.SERVICE_NAME }}'
-          to_revision: 'LATEST=100'
+          revision_traffic: 'LATEST=100'
 
       - name: 'Run re-deploy tests'
         run: 'npm run e2e-tests' # Check that config isn't overwritten
@@ -229,11 +231,11 @@ jobs:
 
       - name: 'Compute job name'
         run: |-
-          echo "JOB_NAME=${GITHUB_JOB}-job-${GITHUB_SHA::7}-${GITHUB_RUN_NUMBER}" >> ${GITHUB_ENV}
+          echo "JOB_NAME=${GITHUB_JOB}-job-${GITHUB_SHA::7}-${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
 
       - uses: 'actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a' # ratchet:actions/setup-node@v4
         with:
-          node-version: '20.12.x' # https://github.com/nodejs/node/issues/53033
+          node-version-file: 'package.json'
 
       - run: 'npm ci && npm run build'
 
@@ -264,7 +266,7 @@ jobs:
       - name: 'Run initial deploy tests'
         run: 'npm run e2e-tests'
         env:
-          PROJECT_ID: ${{ vars.PROJECT_ID }}
+          PROJECT_ID: '${{ vars.PROJECT_ID }}'
           JOB: '${{ env.JOB_NAME }}'
           ENV: |-
             {
@@ -294,12 +296,13 @@ jobs:
             ABC=123
             DEF=456
           env_vars_update_strategy: 'overwrite'
-          secrets: /api/secrets/my-secret=${{ vars.SECRET_NAME }}:latest
+          secrets: |-
+            /api/secrets/my-secret=${{ vars.SECRET_NAME }}:latest
 
       - name: 'Run re-deploy tests'
         run: 'npm run e2e-tests'
         env:
-          PROJECT_ID: ${{ vars.PROJECT_ID }}
+          PROJECT_ID: '${{ vars.PROJECT_ID }}'
           JOB: '${{ env.JOB_NAME }}'
           ENV: |-
             {
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 75839f58..69433c39 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -31,16 +31,10 @@ 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'
-
       - name: 'npm test'
         run: 'npm run test'
diff --git a/package.json b/package.json
index 532ed87b..4807c867 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,10 @@
     "test": "node --require ts-node/register --test-reporter spec --test tests/unit/main.test.ts tests/unit/output-parser.test.ts",
     "e2e-tests": "node --require ts-node/register --test-reporter spec --test tests/e2e.test.ts"
   },
+  "engines": {
+    "node": "20.x",
+    "npm": "10.x"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/google-github-actions/deploy-cloudrun.git"
diff --git a/tests/fixtures/service.yaml b/tests/fixtures/service.yaml
index 3ef34c34..2f6aaeac 100644
--- a/tests/fixtures/service.yaml
+++ b/tests/fixtures/service.yaml
@@ -12,11 +12,11 @@ spec:
     spec:
       containerConcurrency: 20
       containers:
-      - image: 'gcr.io/cloudrun/hello'
-        ports:
-        - containerPort: 8080
-        resources:
-          limits:
-            cpu: '2'
-            memory: '1Gi'
+        - image: 'gcr.io/cloudrun/hello'
+          ports:
+            - containerPort: 8080
+          resources:
+            limits:
+              cpu: '2'
+              memory: '1Gi'
       timeoutSeconds: 300