# MacOS build fails because of homebrew "bundle" unknown command

**URL:** <https://travis-ci.community/t/macos-build-fails-because-of-homebrew-bundle-unknown-command/7296>\
**Category:** macOS\
**Created:** [February 20, 2020, 5:16pm UTC](https://travis-ci.community/t/macos-build-fails-because-of-homebrew-bundle-unknown-command/7296 "2020-02-20T17:16:45Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![nottheoilrig](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/nottheoilrig/32/3879_2.png) [@nottheoilrig](https://travis-ci.community/u/nottheoilrig)\
**Post date:** [February 20, 2020, 11:18pm UTC](https://travis-ci.community/t/macos-build-fails-because-of-homebrew-bundle-unknown-command/7296/14 "2020-02-20T23:18:56Z")

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How frequently do the macOS virtual machines receive updates?

My understanding is that [Homebrew Bundle](https://github.com/Homebrew/homebrew-bundle), which the [Homebrew addon](https://docs.travis-ci.com/user/installing-dependencies#installing-packages-on-macos) uses, now depends on [Homebrew 2.2.5](https://github.com/Homebrew/homebrew-bundle/issues/646#issuecomment-589393926), and the macOS virtual machines currently ship an older version.

Until the virtual machines receive an update, or something else changes, the workaround is to update it via [`update: true`](https://docs.travis-ci.com/user/installing-dependencies#installing-packages-on-macos), as above.

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