gem 'spree', github: 'spree/spree', branch: '2-2-stable'```
Run `bundle update spree`.
## Copy and run migrations
Copy over the migrations from Spree (and any other engine) and run them using
## Read the release notes
For information about changes contained with this release, please read the [2.2.0 Release Notes](http://guides.spreecommerce.org/release_notes/spree_2_2_0.html).
As mentioned in the release notes, asset paths have changed. Change the references on the left, to the ones on the right:
* `admin/spree_backend` => `spree/backend`
* `store/spree_frontend` => `spree/frontend`
This applies across the board on Spree, and may need to be done in your store's extensions.
### Paperclip settings have been removed from master
Please consult [this section](http://guides.spreecommerce.org/release_notes/spree_2_2_0.html#paperclip-settings-have-been-removed) of the release notes if you were using custom Paperclip settings. This will direct you what to do in that particular case.
## Verify that everything is OK
Click around in your store and make sure it's performing as normal. Fix any deprecation warnings you see.