diff --git a/_data/releases.yml b/_data/releases.yml
index 35a0105c29..abb3db830c 100644
--- a/_data/releases.yml
+++ b/_data/releases.yml
@@ -365,6 +365,35 @@
 
 # 2.4 series
 
+- version: 2.4.9
+  date: 2019-10-02
+  post: /en/news/2019/10/02/ruby-2-4-9-released/
+  url:
+    gz:  https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.9.tar.gz
+    zip: https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.9.zip
+    bz2: https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.9.tar.bz2
+    xz:  https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.9.tar.xz
+  size:
+    bz2: 12509600
+    gz:  14133507
+    xz:  10078316
+    zip: 15765536
+  sha1:
+    bz2: e47fcae4862b3fa441df2ca7f2f64ad7b37db489
+    gz:  da07b802cf7598547f98b7b2d8fc8ff5f03dbef4
+    xz:  ae41ac14f98073ba9e6e8ba732580a846286261c
+    zip: 5fa8a25fda7fb938bbbd45cf2c585a35875118ff
+  sha256:
+    bz2: f72bdef50246ef047ba3ce9c59d2081b949feb16f9a04e008108e98f1a995e99
+    gz:  f99b6b5e3aa53d579a49eb719dd0d3834d59124159a6d4351d1e039156b1c6ae
+    xz:  0c4e000253ef7187feeb940a01a1c7594f28d63aa16f978e892a0e2864f58614
+    zip: 4ad1c32554319661f2872bb978ff2cd520bc4593681a6476b4c5e7f330172d8b
+  sha512:
+    bz2: d485444dcd025a261a16bd740dae63c0aa23e4138a095584e7a83aec47af34415c7d9cbc1313e92da2ec416b11bfddf20bb1a7b60c80f12906d11ef27409b3e8
+    gz:  94aba73f48870b5fdb34f7c9eb0419c0a3b962884df6462ef27e69db306829cad0cfc0ac6b9ba445bcb4282b070b75fcbdb3142af2a744252f25ef0052edf04d
+    xz:  9046575315c29c789427c2d00c832f0c0970e47fd158bbe8e4f2df5cff2ea9c06c65c3493adb4656e5b32ebfdc546092911f98a8ad7f698bc001c290db5888c7
+    zip: e87aa613738563572a69ba179f3028994d86bcdc2e990b538aadde87d07aab67ebb7e35a019028cd51187a171368b277b7c79b6cb2e6b3497f0bb9abbe25cfdc
+
 - version: 2.4.8
   date: 2019-10-01
   post: /en/news/2019/10/01/ruby-2-4-8-released/
diff --git a/en/news/_posts/2019-10-02-ruby-2-4-9-released.md b/en/news/_posts/2019-10-02-ruby-2-4-9-released.md
new file mode 100644
index 0000000000..555306be48
--- /dev/null
+++ b/en/news/_posts/2019-10-02-ruby-2-4-9-released.md
@@ -0,0 +1,56 @@
+---
+layout: news_post
+title: "Ruby 2.4.9 Released"
+author: "usa"
+translator:
+date: 2019-10-02 18:00:00 +0000
+lang: en
+---
+
+Ruby 2.4.9 has been released.
+
+This release is a re-package of 2.4.8 because the previous Ruby 2.4.8
+release tarball does not install.
+(See [[Bug #16197]](https://bugs.ruby-lang.org/issues/16197) in detail.)
+There are no essential change except their version numbers between 2.4.8 and 2.4.9.
+
+Ruby 2.4 is now under the state of the security maintenance phase, until
+the end of March of 2020.  After that date, maintenance of Ruby 2.4
+will be ended. We recommend you start planning the migration to newer
+versions of Ruby, such as 2.6 or 2.5.
+
+## Download
+
+{% assign release = site.data.releases | where: "version", "2.4.9" | first %}
+
+* <{{ release.url.bz2 }}>
+
+      SIZE: {{ release.size.bz2 }}
+      SHA1: {{ release.sha1.bz2 }}
+      SHA256: {{ release.sha256.bz2 }}
+      SHA512: {{ release.sha512.bz2 }}
+
+* <{{ release.url.gz }}>
+
+      SIZE: {{ release.size.gz }}
+      SHA1: {{ release.sha1.gz }}
+      SHA256: {{ release.sha256.gz }}
+      SHA512: {{ release.sha512.gz }}
+
+* <{{ release.url.xz }}>
+
+      SIZE: {{ release.size.xz }}
+      SHA1: {{ release.sha1.xz }}
+      SHA256: {{ release.sha256.xz }}
+      SHA512: {{ release.sha512.xz }}
+
+* <{{ release.url.zip }}>
+
+      SIZE: {{ release.size.zip }}
+      SHA1: {{ release.sha1.zip }}
+      SHA256: {{ release.sha256.zip }}
+      SHA512: {{ release.sha512.zip }}
+
+## Release Comment
+
+Thanks to everyone who helped with this release.
diff --git a/ja/news/_posts/2019-10-02-ruby-2-4-9-released.md b/ja/news/_posts/2019-10-02-ruby-2-4-9-released.md
new file mode 100644
index 0000000000..fa9bc0b2ac
--- /dev/null
+++ b/ja/news/_posts/2019-10-02-ruby-2-4-9-released.md
@@ -0,0 +1,57 @@
+---
+layout: news_post
+title: "Ruby 2.4.9 リリース"
+author: "usa"
+translator:
+date: 2019-10-02 18:00:00 +0000
+lang: ja
+---
+
+Ruby 2.4.9 がリリースされました。
+
+このリリースは2.4.8の再パッケージです。
+2.4.8のtarballはインストールができないという問題がありました
+（詳しくは[[Bug #16197]](https://bugs.ruby-lang.org/issues/16197)をご参照ください）。
+2.4.8と2.4.9の間のバージョン番号以外の本質的な変更はありません。
+
+Ruby 2.4 系列は、現在、セキュリティメンテナンスフェーズにあります。
+このフェーズ中は、重大なセキュリティ上の問題への対応のみが行われます。
+現在の予定では、2020 年 3 月末頃を目処に、2.4 系列のセキュリティメンテナンスならびに公式サポートは終了する見込みです。
+現在、2.4 系列を利用しているユーザーの皆さんは、なるべく早く、2.6 系列等のより新しいバージョン系列の Ruby への移行を検討されるよう、お勧めします。
+
+## ダウンロード
+
+{% assign release = site.data.releases | where: "version", "2.4.9" | first %}
+
+* <{{ release.url.bz2 }}>
+
+      SIZE: {{ release.size.bz2 }}
+      SHA1: {{ release.sha1.bz2 }}
+      SHA256: {{ release.sha256.bz2 }}
+      SHA512: {{ release.sha512.bz2 }}
+
+* <{{ release.url.gz }}>
+
+      SIZE: {{ release.size.gz }}
+      SHA1: {{ release.sha1.gz }}
+      SHA256: {{ release.sha256.gz }}
+      SHA512: {{ release.sha512.gz }}
+
+* <{{ release.url.xz }}>
+
+      SIZE: {{ release.size.xz }}
+      SHA1: {{ release.sha1.xz }}
+      SHA256: {{ release.sha256.xz }}
+      SHA512: {{ release.sha512.xz }}
+
+* <{{ release.url.zip }}>
+
+      SIZE: {{ release.size.zip }}
+      SHA1: {{ release.sha1.zip }}
+      SHA256: {{ release.sha256.zip }}
+      SHA512: {{ release.sha512.zip }}
+
+
+## リリースコメント
+
+リリースに協力してくれた皆様に感謝します。