# Checkmk 2.1 — lifecycle date eolFrom is now 2024-11-24 For Checkmk 2.1, product is checkmk; field changed is eolFrom; new value is 2024-11-24; detected is 2026-10-05, recorded from its source on 2026-10-05; source re-checked 2026-10-26. - **Product:** checkmk - **Product label:** Checkmk - **Release cycle:** 2.1 _(verified: appears in the quote below)_ - **Field changed:** eolFrom _(verified: appears in the quote below)_ - **New value:** 2024-11-24 _(verified: appears in the quote below)_ - **Detected:** 2026-10-05 _(our reading, not quoted from the source)_ ## What the source says > {"name":"2.1","codename":null,"label":"2.1","releaseDate":"2022-05-24","isLts":false,"ltsFrom":null,"isEol":true,"eolFrom":"2024-11-24" ## Source - https://endoflife.date/api/v1/products/checkmk Last verified: 2026-10-26. Review by: 2026-11-09. Part of [Software end-of-life date changes — which dates moved and what they were before](https://referencesource.org/software-eol-change-feed/).