Kotlin 2.1
This version has reached end of life and no longer receives updates.
November 27, 2024
Ongoing
June 23, 2025
2.1.21 (May 13, 2025)
About Kotlin 2.1
Kotlin 2.1 recently reached end of life on June 23, 2025. This means it no longer receives security patches or bug fixes from the maintainers. If you are still on this version, now is the time to finalize your upgrade plan before the gap between your version and the current release grows wider.
Upgrade to Kotlin 2.3 for continued security coverage and access to the latest features. The upgrade from 2.1 to 2.3 is typically straightforward, but review the release notes for any deprecations or API changes.
Lifecycle Progress
This version reached end of life June 23, 2025.
All Kotlin Versions
| Version | Released | EOL | Latest | Status |
|---|---|---|---|---|
| 2.3 | December 16, 2025 | TBD | 2.3.10 | Active |
| 2.2 | June 23, 2025 | December 16, 2025 | 2.2.21 | End of Life |
| 2.1 (current page) | November 27, 2024 | June 23, 2025 | 2.1.21 | End of Life |
| 2.0 | May 21, 2024 | November 27, 2024 | 2.0.21 | End of Life |
| 1.9 | July 6, 2023 | May 21, 2024 | 1.9.25 | End of Life |
| 1.8 | December 28, 2022 | July 6, 2023 | 1.8.22 | End of Life |
| 1.7 | June 9, 2022 | December 28, 2022 | 1.7.22 | End of Life |
| 1.6 | November 15, 2021 | June 9, 2022 | 1.6.21 | End of Life |
| 1.5 | April 26, 2021 | November 29, 2021 | 1.5.32 | End of Life |
| 1.4 | August 14, 2020 | April 26, 2021 | 1.4.32 | End of Life |
| 1.3 | October 29, 2018 | August 14, 2020 | 1.3.72 | End of Life |
Frequently Asked Questions
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