Ruby 2.1.9 has been released.

This release includes many bug fixes.
See [ChangeLog](https://svn.ruby-lang.org/repos/ruby/tags/v2_1_9/ChangeLog)
for details.

[As announced before](https://www.ruby-lang.org/en/news/2016/02/24/support-plan-of-ruby-2-0-0-and-2-1/), this is the last normal release of the Ruby 2.1 series.
After this release we will never backport any bug fixes to 2.1 except security fixes.
We recommend that you start planning to upgrade to Ruby 2.3 or 2.2.

By the way, we are planning to release Ruby 2.1.10 in a few days.
Ruby 2.1.10 will not include any changes from 2.1.9, except for its version number.
You do not have to use it on production, but you should test it because it has a two-digit version number.

## Download

* [https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.tar.bz2](https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.tar.bz2)

      SIZE:   12016421 bytes
      SHA1:   39524185b580a3390a3b5019819c8b28d3249766
      SHA256: 4f21376aa11e09b499c3254bbd839e68e053c0d18e28d61c428a32347269036e
      SHA512: a86422132e4c64007a84a91696f4557bdcbc8716fbfe1962f1eef3754ee7f994f4de0b5b7e7231c25057515767040d5c4af33339750b6db15744662e9bd24f38

* [https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.tar.gz](https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.tar.gz)

      SIZE:   15166126 bytes
      SHA1:   dd68afc652fe542f83a9a709a74f4da2662054bf
      SHA256: 034cb9c50676d2c09b3b6cf5c8003585acea05008d9a29fa737c54d52c1eb70c
      SHA512: 1e03aa720e932f019c4651c355e8ef35b87fdf69b054c9d39a319467d2a8e5bfe4995cbacd9add36b832c77761a47c9d1040f00e856ad5888d69ec7221455e35

* [https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.tar.xz](https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.tar.xz)

      SIZE:   9395648 bytes
      SHA1:   5e89efa5189c3def8ee8de18ce750a7e4a20ac32
      SHA256: 39f203f7498aed2456fb500147fada5adcbf102d89d4f6aca773ebcadd8ea82a
      SHA512: 1f331a8910fd7a9ab9c41bf56aef12041dd413ad49c696f6df2c9a7ec3a3d5cdf383f2a3d30949ea37b8ecb39f50355e526412b36ed4e07b60733d9db4d2bd14

* [https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.zip](https://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.9.zip)

      SIZE:   16696728 bytes
      SHA1:   4aa288b65fbf12692ac53577adc561c9a0f6a6ca
      SHA256: 8610fdb1836d493c19600cfed4828083f85197096c0aea3f73fa1ed532cbb5a7
      SHA512: a212b6a58637f6bf4f456d7ecc7bbd8ceaa0c3f16cb844b872eb62eaf261b5874fdb79705241d05a356fcdc1d3fdd8a94fcd8e6ca62190e9f544c8f45a9f41af

## Release Comment

Thanks to everyone who helped with this release.

The maintenance of Ruby 2.1, including this release, is based on the "Agreement for the Ruby stable version" of the [Ruby Association](http://www.ruby.or.jp/).