Bump Akka.Hosting and Akka.Streams

[dependabot]

Updated Akka.Hosting from 1.5.55.1 to 1.5.62.

Release notes

Sourced from Akka.Hosting's releases.

1.5.62

1.5.62 March 4th 2026

Updates

• Bump Akka version from 1.5.61 to 1.5.62

1.5.61 February 26th 2026

Updates

• Bump Akka version from 1.5.60 to 1.5.61

1.5.60 February 10th 2026

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.
• Add WithContext() integration tests for MEL logger - confirmed that Akka.NET 1.5.60's WithContext() logging context enrichment works automatically with LoggerFactoryLogger. Context properties set via the core WithContext() API flow through to Microsoft.Extensions.Logging state dictionaries via TryGetProperties() without any code changes needed.

Bug Fixes

• Fix WithDefaultLogMessageFormatter<T>() rejecting built-in formatters - SemanticLogMessageFormatter and DefaultLogMessageFormatter have private constructors (they use singleton Instance properties), but the validation only accepted public parameterless constructors. These built-in types are now correctly accepted.

Deprecations

• WithDefaultLogMessageFormatter<T>() is now marked [Obsolete] — SemanticLogMessageFormatter is the default as of Akka.NET 1.5.58 and no longer needs to be set explicitly. The method still works for custom ILogMessageFormatter implementations.

Updates

• Bump Akka version from 1.5.59 to 1.5.60

1.5.60-beta1 January 29th 2026

Beta Release

This is a beta release for testing the OpenTelemetry trace correlation feature that was merged after 1.5.59.

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

1.5.59 January 2026

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

Bug Fixes

• Fix semantic logging not capturing named placeholders as structured properties - resolved issue #​701 where named placeholders like {Event} in log messages were not captured as searchable structured properties. Made all LoggerConfigBuilder properties optional and refactored message formatting code.
• Fix TestKit startup timeout race condition - resolved race condition in TestKit.InitializeAsync() where CancellationTokenSource.Register() threw exceptions on the timer thread, causing unhandled exceptions that crashed the test host process. Also increased default startup timeout from 10s to 30s for CI environments.

Updates

• Bump Akka version from 1.5.58 to 1.5.59
• Added OpenTelemetry package dependency (1.9.0+) for trace correlation support

1.5.58 January 9th 2026

Updates
... (truncated)

1.5.61

1.5.61 February 26th 2026

Updates

• Bump Akka version from 1.5.60 to 1.5.61

1.5.60 February 10th 2026

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.
• Add WithContext() integration tests for MEL logger - confirmed that Akka.NET 1.5.60's WithContext() logging context enrichment works automatically with LoggerFactoryLogger. Context properties set via the core WithContext() API flow through to Microsoft.Extensions.Logging state dictionaries via TryGetProperties() without any code changes needed.

Bug Fixes

• Fix WithDefaultLogMessageFormatter<T>() rejecting built-in formatters - SemanticLogMessageFormatter and DefaultLogMessageFormatter have private constructors (they use singleton Instance properties), but the validation only accepted public parameterless constructors. These built-in types are now correctly accepted.

Deprecations

• WithDefaultLogMessageFormatter<T>() is now marked [Obsolete] — SemanticLogMessageFormatter is the default as of Akka.NET 1.5.58 and no longer needs to be set explicitly. The method still works for custom ILogMessageFormatter implementations.

Updates

• Bump Akka version from 1.5.59 to 1.5.60

1.5.60-beta1 January 29th 2026

Beta Release

This is a beta release for testing the OpenTelemetry trace correlation feature that was merged after 1.5.59.

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

1.5.59 January 2026

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

Bug Fixes

• Fix semantic logging not capturing named placeholders as structured properties - resolved issue #​701 where named placeholders like {Event} in log messages were not captured as searchable structured properties. Made all LoggerConfigBuilder properties optional and refactored message formatting code.
• Fix TestKit startup timeout race condition - resolved race condition in TestKit.InitializeAsync() where CancellationTokenSource.Register() threw exceptions on the timer thread, causing unhandled exceptions that crashed the test host process. Also increased default startup timeout from 10s to 30s for CI environments.

Updates

• Bump Akka version from 1.5.58 to 1.5.59
• Added OpenTelemetry package dependency (1.9.0+) for trace correlation support

1.5.58 January 9th 2026

Updates

• Bump Akka version from 1.5.57 to 1.5.58

1.5.57 December 16th 2025

New Features
... (truncated)

1.5.60

1.5.60 February 10th 2026

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.
• Add WithContext() integration tests for MEL logger - confirmed that Akka.NET 1.5.60's WithContext() logging context enrichment works automatically with LoggerFactoryLogger. Context properties set via the core WithContext() API flow through to Microsoft.Extensions.Logging state dictionaries via TryGetProperties() without any code changes needed.

Bug Fixes

• Fix WithDefaultLogMessageFormatter<T>() rejecting built-in formatters - SemanticLogMessageFormatter and DefaultLogMessageFormatter have private constructors (they use singleton Instance properties), but the validation only accepted public parameterless constructors. These built-in types are now correctly accepted.

Deprecations

• WithDefaultLogMessageFormatter<T>() is now marked [Obsolete] — SemanticLogMessageFormatter is the default as of Akka.NET 1.5.58 and no longer needs to be set explicitly. The method still works for custom ILogMessageFormatter implementations.

Updates

• Bump Akka version from 1.5.59 to 1.5.60

1.5.60-beta1 January 29th 2026

Beta Release

This is a beta release for testing the OpenTelemetry trace correlation feature that was merged after 1.5.59.

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

1.5.59 January 2026

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

Bug Fixes

• Fix semantic logging not capturing named placeholders as structured properties - resolved issue #​701 where named placeholders like {Event} in log messages were not captured as searchable structured properties. Made all LoggerConfigBuilder properties optional and refactored message formatting code.
• Fix TestKit startup timeout race condition - resolved race condition in TestKit.InitializeAsync() where CancellationTokenSource.Register() threw exceptions on the timer thread, causing unhandled exceptions that crashed the test host process. Also increased default startup timeout from 10s to 30s for CI environments.

Updates

• Bump Akka version from 1.5.58 to 1.5.59
• Added OpenTelemetry package dependency (1.9.0+) for trace correlation support

1.5.58 January 9th 2026

Updates

• Bump Akka version from 1.5.57 to 1.5.58

1.5.57 December 16th 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57

... (truncated)

1.5.60-beta1

1.5.60-beta1 January 29th 2026

Beta Release

This is a beta release for testing the OpenTelemetry trace correlation feature that was merged after 1.5.59.

New Features

• Add OpenTelemetry trace correlation support for LoggerFactoryLogger - enables proper trace correlation for logs emitted from actor code. Solves the problem that Activity.Current doesn't flow across actor mailbox boundaries because it uses AsyncLocal<T>. When using Akka.NET 1.5.59+, LogEvent.ActivityContext captures trace context at log creation time and flows it through to OpenTelemetry LogRecords via the new AkkaTraceContextProcessor. Register with options.AddAkkaTraceCorrelation() in your OpenTelemetry logging configuration.

1.5.59

1.5.59 January 26th 2026

Bug Fixes

• Fix semantic logging not capturing named placeholders as structured properties - resolved issue #​701 where named placeholders like {Event} in log messages were not captured as searchable structured properties. Made all LoggerConfigBuilder properties optional and refactored message formatting code.
• Fix TestKit startup timeout race condition - resolved race condition in TestKit.InitializeAsync() where CancellationTokenSource.Register() threw exceptions on the timer thread, causing unhandled exceptions that crashed the test host process. Also increased default startup timeout from 10s to 30s for CI environments.

Updates

• Bump Akka version from 1.5.58 to 1.5.59

1.5.58 January 9th 2026

Updates

• Bump Akka version from 1.5.57 to 1.5.58

1.5.57 December 16th 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57

1.5.55.1 October 27th 2025

Enhancements

• Expose options in journal and snapshot builders - resolved issue #​690 by adding Options property to AkkaPersistenceJournalBuilder and AkkaPersistenceSnapshotBuilder. Extension methods can now access configuration details without requiring options as explicit parameters, eliminating redundant option passing for connectivity health checks and other plugin-specific features

1.5.55 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678
• Add support for custom certificate validation callbacks - integrated the new CertificateValidationCallback feature from Akka.NET v1.5.55, allowing users to provide custom certificate validation logic for SSL/TLS connections. Enables advanced scenarios including certificate pinning, subject/issuer matching, custom business validation rules, and advanced mTLS scenarios

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.55-beta1 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates
... (truncated)

1.5.58

1.5.58 January 9th 2026

Updates

• Bump Akka version from 1.5.57 to 1.5.58

1.5.57 December 16th 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57

1.5.55.1 October 27th 2025

Enhancements

• Expose options in journal and snapshot builders - resolved issue #​690 by adding Options property to AkkaPersistenceJournalBuilder and AkkaPersistenceSnapshotBuilder. Extension methods can now access configuration details without requiring options as explicit parameters, eliminating redundant option passing for connectivity health checks and other plugin-specific features

1.5.55 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678
• Add support for custom certificate validation callbacks - integrated the new CertificateValidationCallback feature from Akka.NET v1.5.55, allowing users to provide custom certificate validation logic for SSL/TLS connections. Enables advanced scenarios including certificate pinning, subject/issuer matching, custom business validation rules, and advanced mTLS scenarios

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.55-beta1 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.53 October 14th 2025

Bug Fixes

• Fix event adapter callback API not invoking adapters at runtime - resolved critical bug where event adapters configured via the callback API were not being invoked at runtime. This fix is especially important for users who have migrated to the callback pattern following the deprecation of JournalOptions.Adapters property. The issue was caused by unnecessary fallback configuration that interfered with adapter registration during HOCON merging.

Updates

• Add SSL/TLS configuration settings from Akka.NET 1.5.52 and 1.5.53 - updated SSL/TLS configuration options to support new features and settings introduced in Akka.NET versions 1.5.52 and 1.5.53
  ... (truncated)

1.5.57

1.5.57 December 16th 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57

1.5.55.1 October 27th 2025

Enhancements

• Expose options in journal and snapshot builders - resolved issue #​690 by adding Options property to AkkaPersistenceJournalBuilder and AkkaPersistenceSnapshotBuilder. Extension methods can now access configuration details without requiring options as explicit parameters, eliminating redundant option passing for connectivity health checks and other plugin-specific features

1.5.55 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678
• Add support for custom certificate validation callbacks - integrated the new CertificateValidationCallback feature from Akka.NET v1.5.55, allowing users to provide custom certificate validation logic for SSL/TLS connections. Enables advanced scenarios including certificate pinning, subject/issuer matching, custom business validation rules, and advanced mTLS scenarios

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.55-beta1 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.53 October 14th 2025

Bug Fixes

• Fix event adapter callback API not invoking adapters at runtime - resolved critical bug where event adapters configured via the callback API were not being invoked at runtime. This fix is especially important for users who have migrated to the callback pattern following the deprecation of JournalOptions.Adapters property. The issue was caused by unnecessary fallback configuration that interfered with adapter registration during HOCON merging.

Updates

• Add SSL/TLS configuration settings from Akka.NET 1.5.52 and 1.5.53 - updated SSL/TLS configuration options to support new features and settings introduced in Akka.NET versions 1.5.52 and 1.5.53
• Bump Akka version from 1.5.52 to 1.5.53

1.5.52 October 9th 2025

API Changes
... (truncated)

1.5.57-beta2

1.5.57-beta2 December 3rd 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57-beta2

1.5.55.1 October 27th 2025

Enhancements

• Expose options in journal and snapshot builders - resolved issue #​690 by adding Options property to AkkaPersistenceJournalBuilder and AkkaPersistenceSnapshotBuilder. Extension methods can now access configuration details without requiring options as explicit parameters, eliminating redundant option passing for connectivity health checks and other plugin-specific features

1.5.55 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678
• Add support for custom certificate validation callbacks - integrated the new CertificateValidationCallback feature from Akka.NET v1.5.55, allowing users to provide custom certificate validation logic for SSL/TLS connections. Enables advanced scenarios including certificate pinning, subject/issuer matching, custom business validation rules, and advanced mTLS scenarios

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.55-beta1 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.53 October 14th 2025

Bug Fixes

• Fix event adapter callback API not invoking adapters at runtime - resolved critical bug where event adapters configured via the callback API were not being invoked at runtime. This fix is especially important for users who have migrated to the callback pattern following the deprecation of JournalOptions.Adapters property. The issue was caused by unnecessary fallback configuration that interfered with adapter registration during HOCON merging.

Updates

• Add SSL/TLS configuration settings from Akka.NET 1.5.52 and 1.5.53 - updated SSL/TLS configuration options to support new features and settings introduced in Akka.NET versions 1.5.52 and 1.5.53
• Bump Akka version from 1.5.52 to 1.5.53

1.5.52 October 9th 2025

API Changes
... (truncated)

Commits viewable in compare view.

Updated Akka.Streams from 1.5.60 to 1.5.62.

Release notes

Sourced from Akka.Streams's releases.

1.5.62

1.5.62 March 3rd, 2026

Akka.NET v1.5.62 is a maintenance release with an important bug fix for logging stability when using third-party logging providers.

Bug Fixes

• Fix: catch FormatException in log formatters to prevent third-party logger crashes - Fixes a crash caused by malformed log format strings.

1 contributor since release 1.5.61

COMMITS	LOC+	LOC-	AUTHOR
1	213	35	Aaron Stannard

To see the full set of changes in Akka.NET v1.5.62, click here.

1.5.61 February 26th, 2026

Akka.NET v1.5.61 is a maintenance release with important bug fixes for Akka.Cluster.Sharding, Akka.Cluster, and Akka.Core.

Akka.Cluster.Sharding Bug Fixes

• Port Pekko ShardStopped handler + handoff safety net - Fixes issue #​7500. Resolves a critical issue where shards could fail to hand off indefinitely during scale-up events.
• Fix Shard remember-entities flag mismatch causing entity restart failures - Fixes a bug where the Entities class was initialized with the wrong RememberEntities flag.
• Correct self-comparison in ShardCoordinator ResendShardHost handler - Fixes a bug where the ResendShardHost handler compared a region variable to itself instead of comparing against the message's region.

Akka.Cluster Bug Fixes

• VectorClock inequality fixes - Fixes the != operator which incorrectly delegated to IsConcurrentWith instead of being the logical negation of ==, and fixes the < operator to correctly exclude the equal case.
• Correct format index in 3-arg LogInfo overload - Fixes a logging bug where the 3-arg LogInfo overload used the wrong format index.

Bug Fixes

• Fix wrong randomFactor argument type on RetrySupport.Retry() - Fixes issue #​8059. Changes the randomFactor parameter type from int to double to match the expected behavior for jitter calculations.
• AppVersion.CompareTo missing else if breaks comparison symmetry - Fixes a bug where release versions appeared less than their pre-release counterparts.
• Remove stray dollar signs from interpolated strings - Fixes three string interpolation bugs in output in ClusterHeartbeat, ShardRegion, and SinkRefImpl.

Improvements

• Downgrade VirtualPathContainer RemoveChild log from Warning to Debug - Fixes issue #​8037. Eliminates noisy warnings during high-load Ask operations.

4 contributors since release 1.5.60

COMMITS	LOC+	LOC-	AUTHOR
4	2085	27	Aaron Stannard
5	52	14	Matt Kotsenas
3	151	9	Gregorius Soedharmo
1	2	2	Apoorv Darshan

... (truncated)

1.5.61

1.5.61 February 26th, 2026

Akka.NET v1.5.61 is a maintenance release with important bug fixes for Akka.Cluster.Sharding, Akka.Cluster, and Akka.Core.

Akka.Cluster.Sharding Bug Fixes

• Port Pekko ShardStopped handler + handoff safety net - Fixes issue #​7500. Resolves a critical issue where shards could fail to hand off indefinitely during scale-up events.
• Fix Shard remember-entities flag mismatch causing entity restart failures - Fixes a bug where the Entities class was initialized with the wrong RememberEntities flag.
• Correct self-comparison in ShardCoordinator ResendShardHost handler - Fixes a bug where the ResendShardHost handler compared a region variable to itself instead of comparing against the message's region.

Akka.Cluster Bug Fixes

• VectorClock inequality fixes - Fixes the != operator which incorrectly delegated to IsConcurrentWith instead of being the logical negation of ==, and fixes the < operator to correctly exclude the equal case.
• Correct format index in 3-arg LogInfo overload - Fixes a logging bug where the 3-arg LogInfo overload used the wrong format index.

Bug Fixes

• Fix wrong randomFactor argument type on RetrySupport.Retry() - Fixes issue #​8059. Changes the randomFactor parameter type from int to double to match the expected behavior for jitter calculations.
• AppVersion.CompareTo missing else if breaks comparison symmetry - Fixes a bug where release versions appeared less than their pre-release counterparts.
• Remove stray dollar signs from interpolated strings - Fixes three string interpolation bugs in output in ClusterHeartbeat, ShardRegion, and SinkRefImpl.

Improvements

• Downgrade VirtualPathContainer RemoveChild log from Warning to Debug - Fixes issue #​8037. Eliminates noisy warnings during high-load Ask operations.

4 contributors since release 1.5.60

COMMITS	LOC+	LOC-	AUTHOR
4	2085	27	Aaron Stannard
5	52	14	Matt Kotsenas
3	151	9	Gregorius Soedharmo
1	2	2	Apoorv Darshan

To see the full set of changes in Akka.NET v1.5.61, click here.

Changes:

• a5b74fdc056c9129595418fc76473fbaafc90361 Update RELEASE_NOTES.md for 1.5.61 release (#​8063)
• e5eda84a2456b46adf7b871f108097911f2e5b39 Update v1.5 branch with latest v1.6 changes (#​8062) [ #​8046, #​8052, #​8048, #​8037, #​8051, #​8054, #​8050, #​7500, #​8055, #​8056, #​8057, #​8058, #​8061 ]
• 60530835dee3e03aa95bcdcf9d96c8ece2666133 Update API Approval list for .net 4.8
• be798e75df2c79c683f19719aea261a534fdaf37 Fix wrong randomFactor argument type on RetrySupport.Retry() (#​8061)
• 1acf5dce21da04c71c2660084470b03110c4af48 VectorClock inequality fixes (#​8058)
• 84217761134a80061bd733264dbd57b7f145dfa0 fix: remove stray dollar signs from interpolated strings (#​8057)
• 6fb236b6bf8bdbb8fd2872a1606bab694cc6dbfc fix: correct format index in 3-arg LogInfo overload (#​8056)
• 53312a03c73d9c4138b9cd34f5b4d1d5eeca8bc2 Port Pekko ShardStopped handler + handoff safety net (#​7500) (#​8055)
• 1b0f61a0eb9b84fbd1583bf9cedaf16449b58648 Correct self-comparison in ShardCoordinator ResendShardHost handler (#​8050)
• c6c20805082a524ff0081a2e766f2e04ba4896d6 Fix Shard remember-entities flag mismatch causing entity restart failures (#​8054)

See More

... (truncated)

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• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[dependabot]

Looks like these dependencies are no longer updatable, so this is no longer needed.