Heroku Changelog

Additions and changes to the Heroku platform.

January 16, 2026

• PgBouncer version 1.24 is available on Heroku Postgres
• PHP updates - January 2026
• Go 1.24.12 and 1.25.6 now available

January 15, 2026

• Heroku AI now supports Amazon Rerank 1.0 and Cohere Rerank 3.5 models

January 14, 2026

• Ruby version 3.2.10 is now available
• Node.js 25.3.0, 24.13.0, 22.22.0, and 20.20.0 now available

January 13, 2026

• .NET SDK 8.0.123, 8.0.417, 9.0.113, 9.0.309 and 10.0.102 are now available
• Ruby version 4.0.1 is now available

January 11, 2026

• Python buildpacks updated to uv 0.9.24

January 10, 2026

• Removed the Datastores tab from data.heroku.com

January 09, 2026

• Ruby applications now receive exact bundler version

January 08, 2026

• Python classic buildpack updated to Pipenv 2026.0.3

January 07, 2026

• Python buildpacks updated to pip 25.3
• Python 3.9 is no longer supported

January 06, 2026

• Heroku-22 and Heroku-24 stacks updated

January 05, 2026

• Ruby applications using Heroku CI have a different PATH load order
• Python buildpacks updated to uv 0.9.21

December 25, 2025

• Ruby version 4.0.0 is now available

December 19, 2025

• PHP updates - December 2025

December 18, 2025

• Ruby version 4.0.0-preview3 is now available

December 17, 2025

• Heroku AI now supports additional Claude, Nova, Kimi, MiniMax, and Qwen models
• Ruby version 3.4.8 is now available

December 15, 2025

• Heroku CI now sets `RACK_ENV=test` for all Ruby applications
• Heroku-22 and Heroku-24 stacks updated

December 12, 2025

• PHP 8.5 now available

December 11, 2025

• Node.js 24.12.0 is now available

December 10, 2025

• Node.js classic buildpack now limits version resolution to Active LTS when a wide version range is used
• Python buildpacks updated to uv 0.9.17
• Python classic buildpack now rejects apps with multiple package manager files
• Python classic buildpack now requires a package manager file when using setup.py

December 09, 2025

• .NET SDK 10.0.101 now available
• Python classic buildpack build-time `PATH` change
• Python classic buildpack now rejects existing virtual environment directories

December 05, 2025

• Python 3.14 is now the default Python version
• Python 3.14.2 and 3.13.11 are now available
• Heroku AppLink now supports JWT-based authorizations to Salesforce and Data Cloud

December 04, 2025

• Go 1.24.11 and 1.25.5 now available

December 03, 2025

• Node.js default version is now 24.x
• Bundler version 4.0.0 is now available for Ruby Applications
• Heroku-22 and Heroku-24 stacks updated