Bump concurrent-ruby from 1.3.6 to 1.3.7

[dependabot]

Bumps concurrent-ruby from 1.3.6 to 1.3.7.

Release notes

Sourced from concurrent-ruby's releases.

v1.3.7

There are 3 security fixes in this release, so updating is recommended. These security vulnerabilities are not very likely to be hit in practice and have a corresponding Low severity score.

What's Changed

• CVE-2026-54904 AtomicReference#update livelocks when the stored value is Float::NAN. Fix by @​joshuay03 and @​eregon
• CVE-2026-54905 ReentrantReadWriteLock read-count overflow grants a write lock without exclusivity. Fix by @​joshuay03
• CVE-2026-54906 ReadWriteLock allows wrong-thread write release and stray read-release counter corruption. Fix by @​joshuay03
• concurrent-ruby-ext: fix build on Darwin 32-bit by @​barracuda156 in ruby-concurrency/concurrent-ruby#1064
• Add SECURITY.md by @​eregon in ruby-concurrency/concurrent-ruby#1104
• Add Ruby 4.0 in CI by @​eregon in ruby-concurrency/concurrent-ruby#1106

New Contributors

• @​barracuda156 made their first contribution in ruby-concurrency/concurrent-ruby#1064

Full Changelog: ruby-concurrency/concurrent-ruby@v1.3.6...v1.3.7

Changelog

Sourced from concurrent-ruby's changelog.

Release v1.3.7 (16 June 2026)

concurrent-ruby:

• See the release notes on GitHub.

Commits

• 4c8fc28 Release 1.3.7
• d91ca94 Fix AtomicReference#update livelock when stored value is Float::NAN on JRuby ...
• 7e4d711 Fix ReentrantReadWriteLock read hold overflow into write-lock bit
• 6e37e06 Fix AtomicReference#update livelock when stored value is Float::NAN
• 2825cfa Cleanup spec
• 3fd4932 Fix ReadWriteLock wrong-thread write release and stray read release
• 1974b47 Add Ruby 4.0 in CI
• df8706d Add SECURITY.md (#1104)
• 7a1b789 Bump actions/upload-pages-artifact from 4 to 5
• 9b2dbf7 Bump actions/deploy-pages from 4 to 5
• Additional commits viewable in compare view

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[whitby3001]

Copilot summary:

Review summary

I checked the concurrent-ruby upgrade from 1.3.6 → 1.3.7 against this repo’s usage, the upstream changelog, and the actual code commits in ruby-concurrency/concurrent-ruby.

What changed upstream

This is a small but important patch release. The main code changes are bug/security fixes in atomic and lock primitives:

• Fix AtomicReference#update livelock when the stored value is Float::NAN
• Fix ReentrantReadWriteLock read-count overflow
• Fix ReadWriteLock so wrong-thread write unlocks and stray read unlocks are rejected
• Minor platform/CI/docs changes, plus a package version bump

The changelog explicitly calls out 3 low-severity security fixes, and the commit diff shows the fixes are limited to concurrency primitives rather than any broad API redesign.

Compatibility with hermod

This repo uses concurrent-ruby indirectly via activesupport, and the lock/atomic APIs are not used directly in the application code here. In Gemfile.lock, we already depend on:

• activesupport 8.1.3
• concurrent-ruby 1.3.6
• Ruby 3.4.5 for local development (.ruby-version)

That means the update stays within the version range already expected by ActiveSupport (concurrent-ruby (~> 1.0, >= 1.3.1)), so this bump should be compatible with the current dependency stack.

Safety / risk assessment

I don’t see anything in the upstream changes that suggests a breaking change for this repo:

• No API removal affecting common Rails/ActiveSupport usage
• Changes are mostly defensive correctness fixes
• The Ruby/JRuby/TruffleRuby adjustments are internal implementation details
• The new lock error behavior is a stricter runtime check, but only affects code that incorrectly releases locks from the wrong thread or releases an unheld lock

For hermod specifically, this looks like a safe dependency bump and a good security update.

Recommendation

Safe to merge. I’d approve this update, since it picks up upstream bug/security fixes with low regression risk and remains compatible with the repo’s current Ruby/ActiveSupport setup.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud