Releasesby Glyph.NET 8.0.133, 8.0.427, 9.0.123, 9.0.320, 10.0.114 and 10.0.403 SDKs are now available
Heroku now supports .NET 8.0.133, 8.0.427, 9.0.123, 9.0.320, 10.0.114, and 10.0.403 SDKs for builds.
Also shipped Oct 25, 2026Heroku in October 2026 →
WAF Release - 2026-10-25 - Emergency - Cloudflare Managed Ruleset
Cloudflare released an emergency update to its Managed Ruleset, adding two rules to log requests related to the Brotli vulnerability CVE-2026-111497.
More from HerokuEvery Heroku release →
Default Ruby version for new apps is now 3.4.12
Heroku has set Ruby 3.4.12 as the default version for new applications that do not specify a version.
OpenJDK 27.0.1, 25.0.5, 21.0.13, 17.0.21, 11.0.33 and 1.8.0_512 now available
Heroku has updated the default versions for Java 8, 11, 17, 21, 25, and 27.
Ruby version 3.4.12 is now available
Ruby 3.4.12 is now supported on the Heroku platform.
Ruby version 4.0.9 is now available
Ruby 4.0.9 is now supported on the Heroku platform.
Ruby version 3.3.13 is now available
Ruby 3.3.13 is now supported on the Heroku platform.
Heroku-22, Heroku-24 and Heroku-26 stacks updated
Heroku updated its stack base images to include security and bug fixes for upstream packages.
Ruby version 4.0.8 is now available
Ruby 4.0.8 is now supported on the Heroku platform.
Python 3.15.1, 3.14.9 and 3.13.17 are now available
Python 3.15.1, 3.14.9 and 3.13.17 are now available for use by Python apps on Heroku. In addition, we have updated the Python 3.15, 3.14 and 3.13 major version aliases to resolve to these new Python patch versions.