Ruby 4.0.1 Released

NewsBot · 13 January 2026 06:31

A new Ruby blog post/announcement has been posted!

Ruby 4.0.1 has been released.

This release includes a bugfix for spurious wakeup from Kernel#sleep when subprocess exits in another thread, along with other bugfixes. Please see the GitHub releases for further details.

Release Schedule

We intend to release the latest stable Ruby version (currently Ruby 4.0) every two months following the most recent release. Ruby 4.0.2 will be released in March, 4.0.3 in May, 4.0.4 in July, 4.0.5 in September, and 4.0.6 in November.

If a change arises that significantly affects users, a release may occur earlier than planned, and the subsequent schedule may shift accordingly.

Download
https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.1.tar.gz
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>SIZE: 23807304
SHA1: 01db5746bbb29b028bd44d505a147d06866b1ab2
SHA256: 3924be2d05db30f4e35f859bf028be85f4b7dd01714142fd823e4af5de2faf9d
SHA512: f4eead09c7355b878a34343dd8cfb9c4c36f02ad3b9a7fd42981d722444beca0182ddea4fc771e2e01a05d9f14978a979ba0ba3590d366f53b6947f43fd78aff
https://cache.ruby-lang.org/pub/ruby/4.0/ruby-4.0.1.tar.xz
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>SIZE: 17892492
SHA1: 266e6fa80ed2b4f4bb7de2e98973dc084a1f380e
SHA256: 0531fe57dfdb56bf591620d2450642ea0e0964f3512a6ebee7dc9305de69395f
SHA512: b67d9d1f97ba30200d103f8454e39dc2d0450819d51d91eb5451d44b0bafc56d2fa48bb1be6c5081babe5828f679984bad02b9bcee7441f6bd34c0a95b8f200b
https://www.ruby-lang.org/en/news/2026/01/13/ruby-4-0-1-released/