Heroku Changelog

Additions and changes to the Heroku platform.

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

December 02, 2025

• Bundler version 4.0.0.beta2 is now available for Ruby Applications
• Python 3.14.1 and 3.13.10 are now available
• Python buildpacks updated to uv 0.9.14
• Support two space `BUNDLED WITH` indented `Gemfile.lock`
• Prompt caching is now automatically enabled for system prompts and tool definitions

November 28, 2025

• Heroku Postgres 14 has reached end-of-life

November 26, 2025

• Node.js 20.19.6 is now available

November 24, 2025

• Prompt caching starting December 1, 2025

November 22, 2025

• PHP updates - November 2025

November 21, 2025

• Python 3.10 support is deprecated
• Python buildpacks updated to uv 0.9.11

November 20, 2025

• .NET SDK 9.0.308 now available

November 19, 2025

• AI SDK integration now available

November 18, 2025

• Node.js 25.2.1 is now available
• Ruby version 4.0.0-preview2 is now available
• Heroku-22 and Heroku-24 stacks updated

November 14, 2025

• Python buildpacks updated to uv 0.9.9

November 13, 2025

• Node.js 25.2.0 and 24.11.1 now available

November 11, 2025

• .NET buildpacks now support .NET 10 file-based apps
• .NET SDK 8.0.122, 8.0.319, 8.0.416, 9.0.112, 9.0.307 and 10.0.100 are now available

November 06, 2025

• Go 1.24.10 and 1.25.4 now available
• Changes to the Datastores tab and data.heroku.com

November 04, 2025

• Update to Heroku Postgres 14 deprecation for Essential-tier customers
• Heroku-22 and Heroku-24 stacks updated

November 03, 2025

• Python 3.9.25 is now available
• Python buildpacks updated to uv 0.9.7

October 30, 2025

• Node.js 25.1.0, 24.11.0, and 22.21.1 now available
• Change Data Capture for accelerated polling is now available for all Heroku Connect customers

October 27, 2025

• New error code H34: All up dynos are quarantined

October 24, 2025

• PHP updates - October 2025
• Changes to Heroku Postgres permissions management
• Ruby version 3.3.10 is now available

October 23, 2025

• Heroku AI now supports Claude 4.5 Haiku and Claude 4.5 Sonnet models