Prek 0.5.4

What's new in 0.5.4

Release Notes
Released on 2026-09-28.
Highlights
Faster builtin hooks
In our end-to-end benchmark, prek is about 38% faster than 0.5.3, with some builtin
hooks up to 273% faster (check-yaml: 273%, check-json: 80%,
check-merge-conflict: 71%).
Enhancements
- Add include_deleted to allow hooks to include deleted files (#2733)
- Add --check and simplify end-of-file-fixer (#2764)
- Add --check to file-contents-sorter (#2765)
- Add --check to requirements-txt-fixer (#2766)
- Add --check to trailing-whitespace (#2763)
- Expose and document prek util generate-shell-completion (#2727)
- Support hide_status in project and user configuration (#2760)
- Support look-around regex in builtin pattern hooks (#2732)
Performance
- Cache the resolved Git executable on macOS (#2726)
- Combine and cache Git repository path queries (#2724)
- Optimize common builtin hook execution (#2768)
- Optimize scanning in mixed-line-ending and trailing-whitespace (#2769)
- Scan check-merge-conflict files in fixed-size blocks (#2781)
- Use SIMD UTF-8 validation in check-json, check-toml, and check-yaml (#2770)
Bug fixes
- Retry transient rename failures on Windows (#2756)
- Use PATH to resolve prek in completion scripts (#2719)
Documentation
- Clarify the flow and scope of usage guides (#2710)
- Reorganize usage guides and reference documentation (#2709)
Other changes
- Sync latest identify tags (#2762)
Contributors
- @github-actions
- @j178
Install prek 0.5.4
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/j178/prek/releases/download/v0.5.4/prek-installer.sh | sh
Install prebuilt binaries via powershell script
powershell -ExecutionPolicy Bypass -c "irm https://github.com/j178/prek/releases/download/v0.5.4/prek-installer.ps1 | iex"
Install prebuilt binaries via Homebrew
brew install prek
Download prek 0.5.4
───────────────────────────────────────────┬───────────────────┬─────────────
File │Platform │Checksum
───────────────────────────────────────────┼───────────────────┼─────────────
prek-aarch64-apple-darwin.tar.gz │Apple Silicon macOS│checksum
───────────────────────────────────────────┼───────────────────┼─────────────
prek-x86_64-apple-darwin.tar.gz │Intel macOS │checksum
───────────────────────────────────────────┼───────────────────┼─────────────
prek-aarch64-pc-windows-msvc.zip │ARM64 Windows │checksum …

Full release notes »