How to report bugs in Ruby

日本語版(Japanese version): HowToReportJa.

If you've encountered a bug in Ruby please report it to the redmine issuetracker available at Do not report security vulnerabilities here, please report through our bounty program page at HackerOne or mail .


You should contain at least the following items.

  • Reproduce process
    • your ruby version (ruby -v)
    • reproducible ruby script
  • Result of reproduce process
  • Expected result and the reason why you expect


There are a few simple steps you should follow in order to receive feedback on your ticket.

  • If you haven't already, sign up for an account on the bug tracker.
  • Try the latest version. If you aren't already using the latest version, try installing a newer stable release. See Downloading Ruby.
  • Look to see if anyone already reported your issue, try searching on redmine for your problem.
  • If you can't find a ticket addressing your issue, create a new one.
  • Choose the target version, usually current. Bugs will be first fixed in the current release and then backported.
  • Fill in the Ruby version you're using when experiencing this issue (ruby -v).
  • Attach any logs or reproducible programs to provide additional information. Reproducible scripts should be as small as possible.
  • Briefly describe your problem. A 2-3 sentence description will help give a quick response.
  • Pick a category, such as core for common problems, or lib for a standard library.
  • Check the Maintainers list and assign the ticket if there is an active maintainer for the library or feature.
  • If the ticket doesn't have any replies after 10 days, you can send a reminder.
  • Please reply to feedback requests. If a bug report doesn't get any feedback, it'll eventually get rejected.

Reporting to downstream distributions

You can reports downstream issues for the following distributions via their bugtracker:

  • {debian}[]
  • {freebsd}[]
  • {redhat}[]
  • {macports}[]
  • etc (add your distribution bug tracker here)

Platform Maintainers

For platform specific bugs in Ruby, you can assign your ticket the currentmaintainer for a specific platform.

The current active platform maintainers are as follows:

  • [mswin32, mswin64 (Microsoft Windows)] NAKAMURA Usaku (usa)
  • [mingw32 (Minimalist GNU for Windows)] Nobuyoshi Nakada (nobu)
  • [IA-64 (Debian GNU/Linux)] TAKANO Mitsuhiro (takano32)
  • [Symbian OS] Alexander Zavorine (azov)
  • [AIX] Yutaka Kanemoto (kanemoto)
  • [FreeBSD] Akinori MUSHA (knu)
  • [Solaris] Naohisa Goto (ngoto)
  • [RHEL, CentOS] KOSAKI Motohiro (kosaki)
  • [Mac OS X] Kenta Murata (mrkn)
  • [cygwin, bcc32, djgpp, wince, ...] none. (Maintainer WANTED)