Releasesby IbisRuby version 4.0.9 is now available
UpdateyesterdayUnverifiedAdded Oct 24, 2026
Ruby 4.0.9 is now supported on the Heroku platform.
More Heroku releases
Every Heroku releaseDefault 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 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
We have updated the heroku-22 , heroku-24 and heroku-26 stacks to pick up security and bug fixes in upstream packages. The new base images for each stack will roll out automatically to the Common Runtime over the next 48 hours, followed by Private Spaces .
Ruby version 4.0.8 is now available
Ruby v4.0.8 is now available on Heroku. To run your app using this version of Ruby, add the following ruby directive to your Gemfile: ruby "4.0.8" For more information on Ruby 4.0.8, you can view the release announcement .
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.
Platform API Update: OAuth Session Resource
We updated the Heroku Platform API schema and reference documentation to include OAuth Session operations. Use this resource and endpoints to list and manage the active OAuth sessions for your user account. New Resource: OAuth Session : Represents a group of OAuth access and refresh tokens for an account.
Also shipped on Oct 23, 2026
Heroku in October 2026Retrieve Cortex Search (Public Preview)
The CORTEX_SEARCH_RETRIEVE table function is now in public preview, allowing users to execute low-latency search queries directly from SQL for RAG and chatbot applications.
DataFrame caching on serverless compute is now in Public Preview
Databricks now supports DataFrame caching on serverless compute via df.cache() or df.persist(), allowing users to reuse results within a session.
Box Audit Logs managed ingestion connector (Beta)
The Box Audit Logs connector for Lakeflow Connect is now available in beta, enabling the ingestion of enterprise audit events into Databricks.
Manage Test Engine workflows with Terraform and the REST API
Users can now manage Test Engine workflows using the buildkite_test_suite_workflow Terraform resource or the REST API, enabling code-based configuration of monitors and actions.
Flagship - Target Flagship feature flags with structured evaluation context
Flagship now supports nested objects and arrays in evaluation context, allowing developers to target feature flags based on complex user profiles and tags.
Responses API for the Cortex REST API (Preview)
The new Responses API in the Cortex REST API provides OpenAI-compatible endpoints for accessing models.