Axon and Axoniq Framework - Release 5.3.3

Announcements
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We are glad to announce that we’ve released Axon and Axoniq Framework version 5.3.3 on October 2nd, 2026. This release contains:

Axon Framework

:beetle: Bug Fixes

  • UpdateChecker parameters should not be in headers (PR #5094, by @CodeDrivenMitch)
  • Ensure Micrometer MessageMonitors are Spring Boot-autoconfigured (#5077, PR #5091, by @smcvb)
  • Prevent PSEP from redelivering events to a lagging half of a merged segment (#5079, PR #5087, by @hatzlj)
  • Token claims stolen from segments waiting for a worker thread, despite coordinator claim extension (PR #5065, by @abuijze)
  • Fix NullPointerException for @CommandHandlerInterceptor on creational commands (PR #5064, by @abuijze)

:heart: Contributors

A heartfelt thank you to all contributors who worked on this section:

Axoniq Framework

:chart_increasing: Enhancements

  • Manage the protobuf-java version explicitly in the axoniq-framework-bom (#524, PR #561, by @hatzlj)
  • Always run flatten-maven-plugin, even on a build cache hit (PR #507, by @CodeDrivenMitch)

:beetle: Bug Fixes

  • Ensure all Persistent Stream events are actually read (PR #578, by @smcvb)
  • Fix dead letter processor resolution for multiply decorated event handling components (#531, PR #546, by @hatzlj)
  • Add SchemaInitialization option to PostgresqlEventStorageEngine (PR #517, by @hjohn)
  • Backport build cache feature parity from main to axoniq-5.3.x (PR #513, by @hjohn)
  • Fix persistent streams autoconfig ordering after optional dead-letter module (#504, PR #506, by @hatzlj)

:open_book: Documentation

  • Fix documentation for retrieving a DeadLetterProcessor (PR #544, by @hatzlj)

:hammer_and_wrench: Dependency Upgrades

  • Upgrade entitlement-manager to 1.3.1 (PR #509, by @CodeDrivenMitch)

:heart: Contributors

A heartfelt thank you to all contributors who worked on this section: