Hiero Enterprise Java – Announcing Release v0.20.0

We’re excited to share the news of our first release for hiero-enterprise-java!

This release marks an exciting milestone for the Hiero Enterprise Java team! It is the first release published under the Hiero namespace, now available in Maven under org.hiero.

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What Does This Release Include?

This release introduces multiple API and framework enhancements, for example:

• New accountClient capabilities add support for allowance approval, cryptocurrency transfers and account updates
• HookStore transaction support, and Mirror Node Blocks API support across all supported frameworks.
• On the framework side, MicroProfile now exposes TopicClient and TopicRepository as CDI beans, and topic handling has been improved with JSON parsing fixes for both Spring and MicroProfile modules.
• Multiple correctness and reliability fixes
• Security and operational hardening were strengthened through signing configuration fixes, protections against leaking operator private keys or OS environment variables in logs, updated workflow permissions, pinned workflows, and StepSecurity best-practice adoption.

Release Information and Artifacts?

• Repository: hiero-ledger/hiero-enterprise-java
• Version: v0.20.0
• Published: June 17,2026
• Release URL in GitHub: v0.20.0
• Release URL in Maven Central:
  • hiero-enterprise-spring
  • hiero-enterprise-base
  • hiero-enterprise
  • hiero-enterprise-microprofile

Release Notes

For the complete details of commits included, see the original GitHub release: Release v0.20.0

Get Involved!

• Clone and take a look at the code for hiero-enterprise-java in GitHub..
• Join our LF Decentralized Trust Discord for real-time discussions on Hiero topics including hiero-enterprise-java.
• Take a look at Hiero's public calendar and join us in the next meeting.
• To learn more about Hiero, explore our full content in GitHub.