Kotlin 1.x — End of Life
EOLKotlin 1.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 1.9 | Jul 6, 2023 | — | May 21, 2024 | 1.9.25 | EOL |
| 1.8 | Dec 28, 2022 | — | Jul 6, 2023 | 1.8.22 | EOL |
| 1.7 | Jun 9, 2022 | — | Dec 28, 2022 | 1.7.22 | EOL |
| 1.6 | Nov 15, 2021 | — | Jun 9, 2022 | 1.6.21 | EOL |
| 1.5 | Apr 26, 2021 | — | Nov 29, 2021 | 1.5.32 | EOL |
| 1.4 | Aug 14, 2020 | — | Apr 26, 2021 | 1.4.32 | EOL |
| 1.3 | Oct 29, 2018 | — | Aug 14, 2020 | 1.3.72 | EOL |
CVEs affecting Kotlin 1.x (0)
Kotlin 1.x is EOL — migrate to Kotlin 2.x
Kotlin 2.x is the next major release. Plan your upgrade before Kotlin 1.x stops receiving security patches.
Frequently asked questions
Is Kotlin 1 end of life?
Yes. All Kotlin 1.x releases have reached end of life and no longer receive security patches. Migrate to Kotlin 2.x as soon as possible.
What CVEs affect Kotlin 1?
No CVEs are currently tracked for Kotlin 1.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Kotlin 1 version?
The latest Kotlin 1.x patch release is 1.9.25, released on July 19, 2024. Always run the latest patch to benefit from all security fixes.
How to migrate from Kotlin 1 to Kotlin 2?
To migrate from Kotlin 1 to Kotlin 2: (1) review the official Kotlin 2 migration guide for breaking changes, (2) update dependencies and configuration accordingly, (3) test thoroughly in a staging environment, (4) deploy with a rollback plan. Starting early gives you time to resolve compatibility issues before your current version reaches end of life.
Is it safe to run Kotlin 1 in production?
No. Kotlin 1 has reached end of life and security vulnerabilities are no longer patched. Upgrade to a supported version immediately.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA