Kubernetes 1.33
Current patch release: 1.33.13
End of life in 15 days (June 28, 2026). Plan your upgrade now.
April 23, 2025
April 28, 2026
June 28, 2026
1.33.13 (June 11, 2026)
About Kubernetes 1.33
Kubernetes 1.33 brought in-place resource resize for pods to beta, allowing CPU and memory adjustments without restarting containers, a long-requested feature for production workloads.
Key Changes in Kubernetes 1.33
- ●In-place pod resource resize moved to beta (change CPU/memory limits without restart)
- ●Sidecar containers generally available across more workload types
- ●CEL (Common Expression Language) validation improvements for CRDs
- ●Job API improvements with better handling of indexed jobs and pod failure policies
- ●IPv4/IPv6 dual-stack improvements for service networking
Kubernetes 1.33 has transitioned into security-only maintenance since April 28, 2026. This means it still receives critical security patches, but no new features, performance improvements, or non-critical bug fixes will be backported. It remains a safe choice for production systems that cannot upgrade immediately, but you should begin planning your migration path. With 15 days until end of life, the window for a controlled, well-tested upgrade is narrowing.
When you are ready to upgrade, Kubernetes 1.36 is the recommended target. Test your application against 1.36 in a staging environment first, paying attention to any deprecated APIs you may be using.
Migration Notes
Upgrade from 1.32 is standard. Check for deprecated API versions with kubectl api-versions and review the Kubernetes deprecation guide. The ReleaseRun K8s Deprecation Checker can scan your manifests automatically.
Lifecycle Progress
97% through its lifecycle. 15 days remaining.
All Kubernetes Versions
| Version | Released | EOL | Latest | Status |
|---|---|---|---|---|
| 1.36 | April 22, 2026 | June 28, 2027 | 1.36.2 | Active |
| 1.35 | December 17, 2025 | February 28, 2027 | 1.35.6 | Active |
| 1.34 | August 27, 2025 | October 27, 2026 | 1.34.9 | Active |
| 1.33 (current page) | April 23, 2025 | June 28, 2026 | 1.33.13 | Security Only |
| 1.32 | December 11, 2024 | February 28, 2026 | 1.32.13 | End of Life |
| 1.31 | August 13, 2024 | October 28, 2025 | 1.31.14 | End of Life |
| 1.30 | April 17, 2024 | June 28, 2025 | 1.30.14 | End of Life |
| 1.29 | December 13, 2023 | February 28, 2025 | 1.29.15 | End of Life |
| 1.28 | August 15, 2023 | October 28, 2024 | 1.28.15 | End of Life |
| 1.27 | April 11, 2023 | June 28, 2024 | 1.27.16 | End of Life |
| 1.26 | December 8, 2022 | February 28, 2024 | 1.26.15 | End of Life |
| 1.25 | August 23, 2022 | October 27, 2023 | 1.25.16 | End of Life |
| 1.24 | May 3, 2022 | July 28, 2023 | 1.24.17 | End of Life |
| 1.23 | December 7, 2021 | February 28, 2023 | 1.23.17 | End of Life |
| 1.22 | August 4, 2021 | October 28, 2022 | 1.22.17 | End of Life |
| 1.21 | April 8, 2021 | June 28, 2022 | 1.21.14 | End of Life |
| 1.20 | December 8, 2020 | February 28, 2022 | 1.20.15 | End of Life |
| 1.19 | August 26, 2020 | October 28, 2021 | 1.19.16 | End of Life |
| 1.18 | March 25, 2020 | June 18, 2021 | 1.18.20 | End of Life |
| 1.17 | December 7, 2019 | December 25, 2020 | 1.17.17 | End of Life |
| 1.16 | September 18, 2019 | August 4, 2020 | 1.16.15 | End of Life |
Frequently Asked Questions
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