Table of Contents

• Steps
• References
• Official documents
• Other resoucers

Steps

1. Read the official upgrade guide
2. Update other gems in Gemfile
3. Update Ruby to the latest version
4. Update Rails
5. Run rails app:update
6. Run tests
7. Check if the application is working properly

References

Official documents

• Ruby on Rails 6.0 Release Notes — Ruby on Rails Guides
• Upgrading Ruby on Rails — Ruby on Rails Guides
• rails/CHANGELOG.md at 6-0-stable · rails/rails · GitHub

Other resoucers

• 永久保存版！？伊藤さん式・Rails アプリのアップグレード手順
• 永久保存版 Rails アップデートガイド - pixiv inside