diff --git a/_data/downloads.yml b/_data/downloads.yml
index 6ab158f4b8..5bba55c924 100644
--- a/_data/downloads.yml
+++ b/_data/downloads.yml
@@ -8,7 +8,7 @@ preview:
 stable:
 
   - 4.0.5
-  - 3.4.9
+  - 3.4.10
   - 3.3.11
   - 3.2.11
 
diff --git a/_data/releases.yml b/_data/releases.yml
index 0a6d9359bf..1e24c02e19 100644
--- a/_data/releases.yml
+++ b/_data/releases.yml
@@ -261,6 +261,30 @@
 
 # 3.4 series
 
+- version: 3.4.10
+  date: 2026-06-30
+  post: /en/news/2026/06/30/ruby-3-4-10-released/
+  url:
+    gz:  https://cache.ruby-lang.org/pub/ruby/3.4/ruby-3.4.10.tar.gz
+    zip: https://cache.ruby-lang.org/pub/ruby/3.4/ruby-3.4.10.zip
+    xz:  https://cache.ruby-lang.org/pub/ruby/3.4/ruby-3.4.10.tar.xz
+  size:
+    gz:  22476870
+    zip: 27697773
+    xz:  16709188
+  sha1:
+    gz:  5eac73bce00e770e19b50b69032578df9b2bb41c
+    zip: 09dd69e25c393071bd0550da5f4983ee4d9550a3
+    xz:  8655291cc2e7547d10db5e81f9baac8cdbbbf702
+  sha256:
+    gz:  ecee2d072a14f2d14347dd56dfd8fe5c3130abf5117bfaacbda0f4ef9cc429ec
+    zip: 3b18a22a2ea1bed8df645b1568ba13eb659baeed3a2a1a7f67a21ca604e68a13
+    xz:  6f32ad662baafc228d12030dbcd284f83b034dd4337b300dc84ac74d11a1eb68
+  sha512:
+    gz:  493c9be80a78a4ddf983620295c79ae9f1c8e4c60da8237e12965fa6f95dda6548b3ff3cd311fe774cc8237e18ad2b2514dd029c46c8f4eabea6613a39d7745b
+    zip: 1516ee66d878480b8d7164a002d3087268a79c380ba4807172b26260644f39bac4b7f781b62a815e46bc1107edf578f6cf4eae9aebc8fe86416978e737865278
+    xz:  c28d59946c0a1b8e4385a772e0651c6f4154c18ab8a2a62289c3213eb4fe937cec0942e0076cda429576e58ad277b18f4b5611e644d15b122c1cd96baf10f284
+
 - version: 3.4.9
   date: 2026-03-11
   post: "/en/news/2026/03/11/ruby-3-4-9-released/"
diff --git a/en/news/_posts/2026-06-30-ruby-3-4-10-released.md b/en/news/_posts/2026-06-30-ruby-3-4-10-released.md
new file mode 100644
index 0000000000..bf7b67064b
--- /dev/null
+++ b/en/news/_posts/2026-06-30-ruby-3-4-10-released.md
@@ -0,0 +1,44 @@
+---
+layout: news_post
+title: "Ruby 3.4.10 Released"
+author: nagachika
+translator:
+date: 2026-06-30 12:00:00 +0000
+lang: en
+---
+
+Ruby 3.4.10 has been released.
+
+This release is a regular stable package release contains the version update of bundled gem net-imap. The net-imap.gem update contains some security fixes. Please see [the release note of net-imap v0.5.15](https://github.com/ruby/net-imap/releases/tag/v0.5.15) for the detailed update of net-imap.gem.
+
+Please see the [GitHub releases](https://github.com/ruby/ruby/releases/tag/v3_4_10) for further details.
+
+## Download
+
+{% assign release = site.data.releases | where: "version", "3.4.10" | first %}
+
+* <{{ 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
+
+Many committers, developers, and users who provided bug reports helped us make this release.
+Thanks for their contributions.
diff --git a/ja/news/_posts/2026-06-30-ruby-3-4-10-released.md b/ja/news/_posts/2026-06-30-ruby-3-4-10-released.md
new file mode 100644
index 0000000000..152d53ae83
--- /dev/null
+++ b/ja/news/_posts/2026-06-30-ruby-3-4-10-released.md
@@ -0,0 +1,43 @@
+---
+layout: news_post
+title: "Ruby 3.4.10 リリース"
+author: nagachika
+translator: nagachika
+date: 2026-06-30 12:00:00 +0000
+lang: ja
+---
+
+Ruby 3.4.10 がリリースされました。
+
+このリリースは安定版パッケージの定期的リリースで bundled gem の net-imap のバージョン更新を含んでいます。 net-imap.gem の新しいバージョンはいくつかの脆弱性修正が含まれます。 net-imap.gem の更新についての詳細は [net-imap v0.5.15 のリリースノート](https://github.com/ruby/net-imap/releases/tag/v0.5.15)を参照してください。
+
+その他にもいくつかの不具合修正が行なわれています。詳細は [GitHub releases](https://github.com/ruby/ruby/releases/tag/v3_4_10) を参照してください。
+
+## Download
+
+{% assign release = site.data.releases | where: "version", "3.4.10" | first %}
+
+* <{{ 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
+
+Ruby 開発者の皆様、バグや脆弱性を報告してくれたユーザーの皆様のご協力により本リリースは行われています。皆様のご協力に感謝します。