Renovate Automated Dependency Update Guide

Renovate Automated Dependency Update Guide Using Renovate to fully automate GitHub repository dependency updates with zero manual intervention Topics: Startup, Management, Innovation.

Introduction

Maintaining project dependencies is a daily routine for developers. Manually checking, updating, and testing dependency versions is not only time-consuming but also prone to oversight. This article explains how to use Renovate to achieve fully automated dependency updates.

Objectives

• Automatically check for dependency updates at dawn daily
• Auto-create PRs and merge them (after CI passes)
• Zero manual intervention, running silently in the background
• Unified management across multiple repositories

Installing Renovate

1. Visit GitHub Apps - Renovate
2. Click Install
3. Select repositories to enable (can choose all or specific ones)
4. Complete authorization

Configuration File

Create renovate.json in the repository root:

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "extends": [
    "config:recommended",
    ":automergeAll",
    ":disableDependencyDashboard"
  ],
  "timezone": "Asia/Shanghai",
  "schedule": ["before 3:00am"]
}

Commit and push:

git add renovate.json
git commit -m "chore: configure Renovate for automated dependency updates"
git push

Configuration Details

Option	Description
config:recommended	Renovate’s official recommended base configuration
:automergeAll	Core option — auto-merge all updates (including major versions)
:disableDependencyDashboard	Disable Dashboard Issue for pure background operation
timezone	Set timezone to Asia/Shanghai
schedule	Run checks before 3:00 AM daily

Workflow

3:00 AM daily
    ↓
Renovate checks package.json dependencies
    ↓
Available updates detected
    ↓
Auto-create Pull Request
    ↓
Trigger CI checks
    ↓
CI passes → Auto-merge to main branch
    ↓
See updated dependencies next morning

Multi-Repository Configuration

For multiple projects, copy the same configuration file:

# Create universal config
cat > renovate.json << 'EOF'
{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "extends": ["config:recommended", ":automergeAll", ":disableDependencyDashboard"],
  "timezone": "Asia/Shanghai",
  "schedule": ["before 3:00am"]
}
EOF

# Apply to multiple repositories
for repo in repo1 repo2 repo3; do
  cp renovate.json $repo/
  cd $repo && git add . && git commit -m "chore: configure Renovate" && git push
  cd ..
done

FAQ

PR not auto-merging?

Check CI status. Renovate only merges after all CI checks pass. If CI fails, manually fix the issue and re-run.

How to trigger updates immediately?

• If Dashboard is enabled: Go to Issues → Dependency Dashboard → Check packages to update → Click Rebase
• Or wait for the scheduled time to run automatically

How to exclude specific dependencies?

Add exclusion rules in the config:

{
  "packageRules": [{
    "matchPackageNames": ["package-name"],
    "enabled": false
  }]
}

pnpm / yarn / npm support?

Renovate auto-detects lock file types, no extra configuration needed.

Verification

After pushing the config, Renovate will run automatically (or wait for the scheduled time). Verification steps:

1. Go to repository Pull requests page
2. View Renovate-created PRs (title format: chore(deps): update ...)
3. Confirm PR has auto-merge enabled
4. Auto-merge after CI passes

Summary

Just 5 lines of core configuration:

{
  "extends": [
    "config:recommended",
    "automergeAll",
    "disableDependencyDashboard"
  ],
  "timezone": "Asia/Shanghai",
  "schedule": ["before 3:00am"]
}

Achieve fully automated dependency management, letting developers focus on business code.