Apache Kafka 3.7.1 is generally available on Heroku

Change effective on 25 September 2024

Apache Kafka version 3.7.1 is generally available for Apache Kafka on Heroku. All newly created Kafka add-ons default to the latest version. You can provision a Kafka cluster with this version with the --version 3.7.1 flag.

$ heroku addons:create heroku-kafka:standard-0 -a example-app -- --version 3.7.1

Over the next few weeks we’ll begin upgrading all existing basic Apache Kafka on Heroku plans to 3.7.1 that aren’t on the latest version. Customers will receive an email notifying them before the upgrade takes place. We urge you to upgrade your cluster to the latest version as soon as possible with kafka:upgrade:

$ heroku kafka:upgrade --version 3.7.1

See the Kafka documentation for notable changes when upgrading to 3.7.1. For example, if you’re using Kafka Streams, the Streams API removed all APIs that were deprecated in version 2.5.0 and earlier. Apache Kafka 4.0 also removes Client APIs released before Apache Kafka 2.1 that were previously deprecated in 3.7.

For more information on the version history, see Apache Kafka on Heroku.