> ## Documentation Index
> Fetch the complete documentation index at: https://spreecommerce.org/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# 3.3 to 3.4

> This guide covers upgrading a 3.3 Spree store, to a 3.4 store.

### Update gems

```bash theme={"theme":"night-owl"}
bundle update
```

### Install missing migrations

```bash theme={"theme":"night-owl"}
rake railties:install:migrations
```

### Run migrations

```bash theme={"theme":"night-owl"}
rails db:migrate
```

### Migrate Spree::Taxon icons to Spree Assets

We changed `Spree::Taxon` icon to use `Spree::Asset` to unify attachment usage across all Spree models. If you were using icon images in `Spree::Taxon` please run this to migrate your icons:

```bash theme={"theme":"night-owl"}
rails db:migrate_taxon_icons
```

## Read the release notes

For information about changes contained within this release, please read the [3.4.0 Release Notes](https://github.com/spree/spree/releases/tag/v3.4.0).