Ruby is a dynamic, open-source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write. This system is hosting the development of Ruby language and its related projects.

You must register your account and activate it via an email before reporting issues.
Or login if you have an account.

How to report a bug

How To Report

See HowToReport (English) or HowtoReportJa (Japanese).



Segmentation fault with M1 macOS

Homebrew issue of macOS Mojave

Floating point numbers

About Security Reports

Please DO NOT report security issues via this system, because the system publishes them immediately.
In order to report, send a mail to instead. Reported problems will be published after fixes.


Ruby Wiki mainpage

Ruby Language Home


If you have a problem with this tracking system itself, then please open an issue at