back to website

Changelog (Werks)

The software development of Checkmk is organized in so-called Werks. A Werk is any change or bug fix that has an influence on the user's experience. Each Werk has a unique ID, one of the levels Trivial Change, Prominent Change or Major Feature and one of the classes Bug Fix, Feature or Security Fix.
Whenever you make an update to a new Checkmk version please make sure that you have understood all incompatible changes. You might have to adapt your configuration.

Want to get notifications for new versions, new werks or subscribe to the security mailing list? Sign up here.

Filters

by product

by version

by impact

by type

by edition

  • All editions
  • Raw
  • Enterprise
  • Cloud
  • Managed services

by compatibility

The Checkmk logo (formerly known as Check_MK) is a trademark of Checkmk GmbH. ©2026 Checkmk GmbH. All rights reserved.

Join our Checkmk Conference #12 – the hybrid Monitoring Community event in Munich, on June 16-18 – to explore new Checkmk features, best practices, and our roadmap.

Register now