Hi there, the Xcode 13.0, Xcode 13.1, Xcode 13.2 and Xcode 13.3 Stacks have been Updated 
Notable changes on Intel:
- MacOS updated to 12.4 to fix a bug where the Keychain was locked
- Android NDK updated from 21.4 to 24.0
- Android SDK CMD line tools updated from 5.0 to 6.0
To select any of these Stacks you just have to open your app on [bitrise.io](https://www.bitrise.io),
go to the Workflow tab (Workflow Editor), and on the Stack tab select the an Xcode stack
option and your next build will start on the Xcode 13.4.x stack.
Note: you can now select separate stacks for separate workflows!
Read more at: https://blog.bitrise.io/per-workflow-stack-selection-is-here.*
You can find the system report changes here:
If you’d like to add additional tools to be pre-installed you can find the instructions on GitHub, for both the Linux and for the macOS stacks.
Information about Stack types & update schedules can be found here: [discuss.bitrise.io/t/281.](How are the bitrise.io stacks updated and with what frequency? What's the stack deprecation / removal policy?](How are the bitrise.io stacks updated and with what frequency? What's the stack deprecation / removal policy?)._)
Happy Building! 