Sync default bundler verison with Classic buildpack #479
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The CNB supports only heroku-24+ while the classic supports heroku-22+. Decreasing the default bundler version on the CNB allows us to align both buildpacks to the same bundler version. Note that this will only take effect if the default bundler version that ships with Ruby is less than the default version we supply.
edmorley
reviewed
Jan 30, 2026
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| ### Changed | ||
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| - Default bundler version is now 2.3.27 |
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I think it's worth the changelog entries also saying what the version was changed from - particularly in this case since it's a downgrade.
Also, the points in https://github.com/heroku/heroku-buildpack-ruby/pull/1706/changes#r2745764862 apply here too (need an explanation why we're downgrading not upgrading classic etc)
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Closing in favor of heroku/heroku-buildpack-ruby#1708 |
auto-merge was automatically disabled
January 30, 2026 20:28
Pull request was closed
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The CNB supports only heroku-24+ while the classic supports heroku-22+. Decreasing the default bundler version on the CNB allows us to align both buildpacks to the same bundler version.
Note that this will only take effect if the default bundler version that ships with Ruby is less than the default version we supply.
GUS-W-21093069