# Weekly Virtual Machine / Stack updates - 2017.03.18 **URL:** \ **Category:** Changelog\ **Tags:** stack-updates\ **Created:** [March 17, 2017, 6:44pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2017-03-18/1170 "2017-03-17T18:44:37Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![viktorbenei](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/viktorbenei/32/18_2.png) [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)\ **Post date:** [March 17, 2017, 6:44pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2017-03-18/1170/1 "2017-03-17T18:44:37Z")
## Highlights - Bitrise CLI 1.5.5 > [@Monthly release of Bitrise CLI tools and summary of updates (Marc, 2017)](http://discuss.bitrise.io/t/monthly-release-of-bitrise-cli-tools-and-summary-of-updates-marc-2017/1121): > > We ship a new bitrise cli version on the second Tuesday of every month. The new release will be available on the [bitrise.io](https://www.bitrise.io) virtual machines on the weekend after the CLI release, unless we discover any serious bug / regression. Read on to learn more about this month’s [Bitrise CLI](https://github.com/bitrise-io/bitrise) release and about the changes around bitrise tools and steps. New version of Bitrise CLI ([1.5.5](https://github.com/bitrise-io/bitrise/releases/tag/1.5.5)) Silent setup: bitrise will do a setup (if was not performed for the current version) before any plugin run. F… ### Android/Linux stacks - SDK tools updated to 25.2.5 & `android-25` system image & a couple of `constraint-layout` packages preinstalled - thanks @koral for the [PR](https://github.com/bitrise-docker/android/pull/68/files)! ### Xcode stacks - Ruby 2.4 on Xcode Edge and on Xcode 8.3.x stacks - Xcode 8.3.x stack: Due to `brew` changes, which had some surprising breaking behavior even if you do a simple `brew update` (not `upgrade` just `update`) we had to rebuild the Xcode 8.3.x stack, so it’s pretty much identical to Xcode Edge (both have the latest versions of all the preinstalled tools), the only difference is Xcode version. ### Xamarin stacks - Stable update: [https://releases.xamarin.com/service-release-cycle-9/](https://releases.xamarin.com/service-release-cycle-9/) - Beta & Alpha update: [https://releases.xamarin.com/beta-release-15-1-beta-preview-1/](https://releases.xamarin.com/beta-release-15-1-beta-preview-1/) ## This week’s changes (diffs) > ## Stack System Reports You can find the full system report of all of the available Stacks on GitHub: [https://github.com/bitrise-io/bitrise.io/tree/master/system\_reports](https://github.com/bitrise-io/bitrise.io/tree/master/system_reports). If you’d like to add additional tools to be pre-installed you can find the instructions on [GitHub](https://github.com/bitrise-io/bitrise.io#request-a-tool-to-be-pre-installed-on-a-build-machine), for both the Linux and for the macOS stacks. _Information about **Stack types & update schedules** can be found here: [discuss.bitrise.io/t/281](http://discuss.bitrise.io/t/how-are-the-bitrise-io-stacks-updated-and-with-what-frequency/281)._ **Happy Building!** ---
**Author:** ![viktorbenei](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/viktorbenei/32/18_2.png) [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)\ **Post date:** [March 17, 2017, 6:45pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2017-03-18/1170/2 "2017-03-17T18:45:57Z")
All stacks passed our tests and ready for tomorrow’s deploy 🚀 ---
**Author:** ![viktorbenei](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/viktorbenei/32/18_2.png) [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)\ **Post date:** [March 18, 2017, 1:42pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2017-03-18/1170/3 "2017-03-18T13:42:53Z")
New stacks deployed and are available in production now 🎉