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IBM Semeru Runtime Certified Edition for z/OS refreshes

News


Abstract

The latest refresh of IBM® Semeru Runtime Certified Edition for z/OS® is available.

Content

Refreshes are available every quarter. These releases contain the latest OpenJDK version, IBM features, and IBM fixes including security fixes.

The following table shows the latest available release and the OpenJDK version on which the release is based:

 
Latest releaseRelease dateOpenJDK versionFixes list
11.0.29.0November 202511.0.29.0Version 11
17.0.17.0November 202517.0.17.0Version 17
21.0.9.0November 202521.0.9.0Version 21

Note: With the NIST standardization of Matrix Lattice-based Post-Quantum Cryptography (PQC) algorithms, the use of CRYSTAL-Kyber and CRYSTAL-Dilithium are no longer recommended. Support for the NIST standard algorithms have been added to Semeru Runtimes versions 17 and 21.

Documentation

Documentation for quarterly releases is available in IBM Documentation, with late-breaking information in a separate support page, as shown in the following table.

 
 Version 11
What's new (IBM Documentation)What’s new
Late-breaking informationIBM Semeru Runtime Certified Edition for z/OS 11: Supplementary documentation
 
 Version 17
What's new (IBM Documentation)What’s new
Late-breaking informationIBM Semeru Runtime Certified Edition for z/OS 17: Supplementary documentation
 
 Version 21
What's new (IBM Documentation)What’s new
Late-breaking informationIBM Semeru Runtime Certified Edition for z/OS 21: Supplementary documentation
 
 

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Comparative OpenJDK versions

The following tables indicate the OpenJDK version that the IBM SDK is based on.

Version 21

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Release dateIBM SDK 21OpenJDK version
2025 November21.0.9.021.0.9.0
2025 August21.0.8.021.0.8.0
2025 June21.0.7.021.0.7.0
2025 February21.0.6.021.0.6.0
2024 NovemberInitial release21.0.4.0

Version 17

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Release dateIBM SDK 17OpenJDK version
2025 November17.0.17.017.0.17.0
2025 August17.0.16.017.0.16.0
2025 June17.0.15.017.0.15.0
2025 March17.0.14.017.0.14.0
2024 December17.0.13.017.0.13.0
2024 September17.0.12.117.0.12.1
2024 June17.0.11.017.0.11.0
2024 March17.0.10.017.0.10.0
2023 December17.0.9.017.0.9.0
2023 AugustInitial release17.0.7.0

Version 11

 
Release dateIBM SDK OpenJDK version
2025 November11.0.29.011.0.29.0
2025 August11.0.28.011.0.28.0
2025 June11.0.27.011.0.27.0
2025 March11.0.26.011.0.26.0
2024 December11.0.25.011.0.25.0
2024 September11.0.24.111.0.24.1
2024 June11.0.23.011.0.23.0
2024 February11.0.22.011.0.22.0
2023 December11.0.21.011.0.21.0
2023 October11.0.20.111.0.20.1
2023 September11.0.19.111.0.19.1
2023 June11.0.19.011.0.19.0
2023 February11.0.18.011.0.18.0
2022 November11.0.17.011.0.17.0
2022 September11.0.16.011.0.16.0
2022 June11.0.15.011.0.15.0
2022 March11.0.14.111.0.14.1
2021 NovemberInitial release11.0.12.0

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Document Information

Modified date:
27 November 2025

UID

ibm16516454

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