Releasesby IbisUpcoming migration from ZooKeeper to KRaft for Apache Kafka on Heroku
Update12 days agoUnverifiedAdded Oct 20, 2026
On October 19, 2026, we’ll begin migrating Apache Kafka on Heroku cluster infrastructure from ZooKeeper to KRaft. This change modernizes how clusters manage their internal metadata. Heroku will notify you via email when maintenance is scheduled to perform this migration on your Kafka cluster. No action is required from you.
Topics: Streaming
More Heroku releases
Every Heroku releaseHeroku Connect now supports Salesforce API v68.0
Heroku Connect now defaults to version 68.0 of the Salesforce API, the latest version available in the Winter ‘27 release. Learn how to specify the API version at connection creation on the Heroku Dev Center .
Heroku AI now supports Claude Haiku 5.5, Claude Opus 5.5, Claude Sonner 5.5, and Claude Fable 5.1 models
Heroku’s Managed Inference and Agents add-on now supports these AI models: Claude Haiku 5.5 : A fast and cost-effective LLM designed for high-volume, latency-sensitive tasks like classification, extraction, and routing.
Python buildpacks updated to Pipenv 2026.9.1 and uv 0.13.1
We have updated the package managers used during the build of Python apps as follows: uv updated from 0.12.21 to 0.13.1 ( changelog ) And for Cedar-generation Python apps only: Pipenv updated from 2026.8.0 to 2026.9.1 ( changelog )
Node.js 26.12.0 and 24.22.0 now available
Node.js versions 26.12.0 and 24.22.0 have been made available for builds on Heroku. For additional information, please see our article on Node.js Support .
Ruby version 4.1.0-preview1 is now available
Ruby v4.1.0-preview1 is now available on Heroku. To run your app using this version of Ruby, add the following ruby directive to your Gemfile: ruby "4.1.0.preview1" For more information on Ruby 4.1.0-preview1, you can view the release announcement . This version of Ruby is not suitable for production applications.
Python 3.15 is now available
Python 3.15.0 is now available for use by Python apps on Heroku. See the Python 3.15.0 release announcement and What’s New In Python 3.15 to learn more about the new major version. See Specifying a Python Version for details on how to configure the Python version for your app.
Go 1.27.2 and 1.26.9 are now available
Go 1.27.2 and 1.26.9 are now available for use by Go apps on Heroku. In addition, we have updated the Go 1.27 and 1.26 version aliases to resolve to these new Go patch versions. See Go Versions for details on how to configure the Go version for your app.
.NET 8.0.132, 8.0.426, 9.0.122, 9.0.319, 10.0.113 and 10.0.402 SDKs are now available
.NET 8.0.132 , 8.0.426 , 9.0.122 , 9.0.319 , 10.0.113 and 10.0.402 SDKs have been made available for builds on Heroku. The .NET 8.0 SDKs include .NET Runtime 8.0.32 and ASP.NET Core Runtime 8.0.32 . The .NET 9.0 SDKs include .NET Runtime 9.0.21 and ASP.NET Core Runtime 9.0.21 .
Also shipped on Oct 12, 2026
Heroku in October 2026Change an incident’s conference bridge without leaving Slack with /pd meeting now Generally Available
Run /pd meeting during an incident, paste the new link, and PagerDuty updates the incident card instantly with a Join meeting button in the channel. Scribe Agent follows along to the new meeting on its own, so you keep the transcript for your post-incident review. Available to customers using the Pa...
New Incident Workflow action: Get Slack Mentions for Incident Participants now Generally Available
This new Incident Workflow action pulls the assignees, acknowledgers, and role holders on an incident and turns them into Slack @mentions. Pair it with Send Slack Message to tag everyone involved without hard-coding names, so the same workflow works across every team and rotation. Available to Pager...
Conference bridge selection in the Slack declare modal now Generally Available
Declare an incident with /pd declare and choose one of your pre-configured PagerDuty conference bridges from a dropdown, or paste a meeting URL if you don't have one set up. The bridge is on the incident from the moment it's declared, so responders can join from Slack in one click. Available to cust...
Incremental data transfers for the BigQuery Data Transfer Service for PostgreSQL and ServiceNow are now...
Incremental data transfers for the BigQuery Data Transfer Service for PostgreSQL and ServiceNow are now generally available (GA).
Support for Budget spend caps to pause your Cloud Run workloads is in General Availability (GA)
Support for Budget spend caps to pause your Cloud Run workloads is in General Availability (GA) .
End-to-end Snowflake Observability is now generally available in Dynatrace
Dynatrace Snowflake Observability is now generally available in the Dynatrace Data Observability app, offering automated telemetry collection and 14 pre-built dashboards for monitoring cost, performance, and data quality.