You should **always check the [release notes/changelog](https://git.pleroma.social/pleroma/pleroma/-/releases)** in case there are config deprecations, special update steps, etc.
2. Run `git checkout <tagged release>` [^1]. e.g. `git checkout v2.4.5` This pulls the [tagged release](https://git.pleroma.social/pleroma/pleroma/-/releases) from upstream.
[^1]: Depending on which install guide you followed (for example on Debian/Ubuntu), you want to run `git` and `mix` tasks as `pleroma` user by adding `sudo -Hu pleroma` before the command.