RubyInstaller 2.0.0-p576 released

I’m very pleased to announce the release of RubyInstaller packages for

Installers and 7z binary packages are available from

Ruby 2.0.0-p576

This new version of Ruby also brings new changes to RubyInstaller.

Starting with 2.0.0, the packages will be provided in two versions:
32bits (x86) and 64bits (x64).

This is possible thanks to newer compiler provided by mingw-w64 project.

This means newer DevKit package is required to use with this version.

Important information

Please note that the installers in this release are not digitally

You can read more about this in post at RubyInstaller group:

Choosing 32bits vs 64bits

Before you download a 64bits version (labeled x64), it is important you
understand that not all gems, libraries or tools have been tested for

It is our recommendation you use 32bits until these issues are solved.

If you have a 64bits version of Windows, you can still use 32bits, as
is no performance issue around it.

Ruby 2.0.0 is brand new

While officially 2.0.0 is stable, that doesn’t mean all the software
magically work on it.

Use 2.0.0 for development and verify your application, scripts and tools
properly before deciding to run this in your production environment.

Existing pre-compiled gems might not be Ruby 2.0 compatible

Ruby 2.0 introduces ABI breakage which means compiled C extensions with
1.9.3 will not run against Ruby 2.0.

DO NOT install Ruby 2.0 on top of existing Ruby 1.9.3, or try to use
extensions with it.

You will be required to force compilation of those gems:

gem install <name> --platform=ruby

This will require you have the extra dependencies installed for that
gem to
compile. Look at the gem documentation for the requirements.

Please check each gem documentation and recent releases.

Do not use other DevKit version than the one recommended

This version of Ruby has been compiled and optimized for mingw-w64 GCC

Use of older version of DevKit package to compile gems might result in
compilation issues during gem installation or simply segfaults.

Look for the DevKit installers identified with the name
‘DevKit-mingw64-64’ for 32 and 64 bits respectively.

To be clear:

  • For 32bits Ruby 2.0.0: download and install DevKit-mingw64-32-4.7.2
  • For 64bits Ruby 2.0.0: download and install DevKit-mingw64-64-4.7.2

Known Issues

There are some issues with Development Kit configuration process that
to detect x64 installations of Ruby. You will need to manually edit
config.yml for it to work. See the following issues for details:


15226e34ddb8b208b78ac12440c9e23c *ruby-2.0.0-p576-doc-chm.7z
40a87864ca89bbd46f8083bb5cd52d89 *ruby-2.0.0-p576-i386-mingw32.7z
a097cb750316e8bfa25fd836dd4296fa *ruby-2.0.0-p576-x64-mingw32.7z
723ae8cda24a86c16914582a340deece *rubyinstaller-2.0.0-p576.exe
a6ab3963c571055cba649237d3f4a771 *rubyinstaller-2.0.0-p576-x64.exe

Official Announcement:


  • Upgraded Ruby 2.0.0 to patchlevel 576
  • Upgraded OpenSSL to version 1.0.0n
  • Upgraded zlib to version 1.2.8