Update your Rails version to 5.2

Spree 3.6 requires Rails 5.2 at a minimum. Please follow the official Rails guide to upgrade your application.

Update gems

bundle update

(Optional) Migrate to ActiveStorage (optional)

Please follow the official paperclip guide if you want to use ActiveStorage instead of paperclip.

You can still use paperclip for attachment management by setting SPREE_USE_PAPERCLIP environment variable to true, but keep in mind that paperclip is DEPRECATED and we will remove paperclip support in Spree 4.0.

Install missing migrations

rake railties:install:migrations

Run migrations

rails db:migrate

You’re good to go!

Read the release notes

For information about changes contained within this release, please read the 3.6.0 Release Notes.