To select 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 Xcode 13.4.x option and your next build will start on the corresponding 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 reports 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 stacks0.
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! 