Add logger to Gemfile for Ruby 4.0#9920
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jekyllbot merged 1 commit intojekyll:masterfrom Feb 13, 2026
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In Ruby 4.0, the logger gem is now a "bundled" gem, meaning it now needs to be added to gemfiles/gemspec. I'm picking the earliest version of Logger available, because we used to rely on the built-in logger which could've been old.
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parkr
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This is a 🐛 bug fix. (ish)
Summary
The issue: on Ruby 4.0,
jekyll servefails unless I addloggerto the local Gemfile.The fix: add
loggerto the gemspec.Context
Logger is now a bundled gem, which means it must be added to the Gemfile/gemspec. See this part of Ruby 4.0 changelog.
I'm picking the earliest version of Logger available, because we used to rely on the built-in logger which could've been old.