Bump Akka from 1.5.57 to 1.5.60

[dependabot]

Updated Akka from 1.5.57 to 1.5.60.

Release notes

Sourced from Akka's releases.

1.5.60

1.5.60 February 9th, 2026

Akka.NET v1.5.60 is a maintenance release with a bug fix and a new feature for structured logging.

Bug Fixes

• Fix TestActor initialization race in parallel test startup - Fixes a race condition where TestActor could receive messages before its initialization was complete when tests were run in parallel, causing intermittent test failures.

New Features

• Add logging context enrichment and scopes - Fixes issue #​7535. Adds WithContext() and BeginScope() extension methods to ILoggingAdapter for structured logging context enrichment. Context properties are automatically included in log output and forwarded to downstream logging providers like Serilog and NLog. See documentation.

  var log = Logging.GetLogger(Sys, "example");
  
  // Enrich a logger with additional structured context
  var enrichedLog = log
      .WithContext("Tenant", "foo")
      .WithContext("Partition", 12);
  
  enrichedLog.Info("Processing {Offset}", 42);
  // Output: [INFO][...][akka://sys/user/a][Tenant=foo][Partition=12] Processing 42
  
  // Create a temporary logging scope
  using (var scope = log.BeginScope("RequestId", "REQ-123"))
  {
      scope.Log.Info("Handling request {RequestId}", "REQ-123");
  }

COMMITS	LOC+	LOC-	AUTHOR
2	581	89	Aaron Stannard

To see the full set of changes in Akka.NET v1.5.60, click here.

Changes:

• 174a81d4d6a056c0fb3d55b207a4e7a8cba2c78c Update version to 1.5.60 and add release notes (#​8045)
• dfcb680afd5b372eec549beebd8cd37ad2dfb6ad Add logging context enrichment and scopes (#​8042)
• 717b53f74e2432db6119fc754fba0e0bc4eb72e7 Fix TestActor initialization race in parallel test startup (#​8023)

This list of changes was auto generated.

1.5.59

1.5.59 January 27th, 2026

Akka.NET v1.5.59 is a maintenance release with critical bug fixes and new features for observability.

Critical Bug Fixes

• Fix MergeSeen to filter Seen against current Members - Fixes issue #​8009. Resolves a cluster gossip serialization failure that could occur with the error "Unknown address in cluster message" when the Seen table contained addresses of members that had already left the cluster.

Bug Fixes

• Fix logger initialization continuation race in LoggingBus - Fixes a race condition during logger initialization that could cause logging failures during actor system startup.
• Fix Inbox.AwaitResult throwing AggregateException instead of TimeoutException - Inbox.AwaitResult now correctly throws TimeoutException when a timeout occurs, rather than wrapping it in an AggregateException.
• Fix DeferAsync async handler nesting bug in CommandAsync - Fixes issue #​7998. Resolves an issue where DeferAsync with an async handler would throw "RunTask calls cannot be nested" when called from CommandAsync.
• Fix AwaitAssertAsync logic causing premature timeout - Fixes AwaitAssertAsync in Akka.TestKit to correctly wait for the full timeout duration before failing assertions.

New Features

• Add ActivityContext capture to LogEvent for trace correlation - Log events now automatically capture the current System.Diagnostics.ActivityContext when created, enabling correlation between Akka.NET logs and distributed traces in observability platforms like OpenTelemetry, Application Insights, and Jaeger.
• Add BroadcastHub startAfterNrOfConsumers parameter - Fixes issue #​8017. Port from Apache Pekko - adds a startAfterNrOfConsumers parameter to BroadcastHub.Sink<T>() that delays broadcasting until the specified number of consumers have subscribed:

  // Wait for 3 consumers before starting to broadcast
  var sink = BroadcastHub.Sink<int>(startAfterNrOfConsumers: 3, bufferSize: 256);

Improvements

• CoordinatedShutdown: clearly log the reason why we're exiting - CoordinatedShutdown now logs the specific reason for shutdown at INFO level, making it easier to diagnose why an actor system terminated.

To see the full set of changes in Akka.NET v1.5.59, click here.

Changes:

• 85889e2d49ee75a3161eff115c08809ffed1cce0 Update version to 1.5.59 in Directory.Build.props
• bbb70873e69e4fcfc17bac8b2d018f4589a0fc3d Add release notes for Akka.NET v1.5.59 [ #​8011 ]
• f7b77584fdd8dd791b7c75b2b8834c365e23d4d1 Update API approval files for 1.5.59 backport
• b1d6d10591d262fb4d10e55e8a2e669be5fed4d6 Fix MergeSeen to filter Seen against current Members (#​8009) (#​8011)
• da692cb3fbf740eea1a1fdc1bab712985e1a2472 Add ActivityContext capture to LogEvent for trace correlation (#​7995) [ #​6855 ]
• 1ada6355729b01dd2d6698d332c318c753ff4622 Fix logger initialization continuation race in LoggingBus (#​8006)
• 5284e131bafc373ead85d29993eb4682ac65fdca Add BroadcastHub startAfterNrOfConsumers parameter (#​8017) (#​8018) [ #​275, #​1841 ]
• 99b00c5d24024d28997309e4571bc4f15d9ee9b5 Fix Inbox.AwaitResult throwing AggregateException instead of TimeoutException (#​8005)
• 7e18fb8067ac959636a1f3e4fd7bce3f7879baac Fix DeferAsync async handler nesting bug in CommandAsync (#​7998) (#​7999)
• bc85915839ffa45be04407e87f9b737a766c65f4 CoordinatedShutdown: clearly log the reason why we're exiting (#​7988)

See More

• 55f008a2d0124b198b15281e30e1db6bbd8d8022 Fix AwaitAssertAsync logic

This list of changes was auto generated.

1.5.58

1.5.58 January 8th, 2026

Akka.NET v1.5.58 is a maintenance release with important bug fixes and performance improvements.

.NET 10 Compatibility Fix

• Fix .NET 10 CLR shutdown hook breaking change - Resolves an issue where the CLR shutdown hook behavior changed in .NET 10, ensuring graceful actor system termination works correctly.

Bug Fixes

• Fix TcpListener to not stop accepting connections on transient accept errors - The TcpListener now properly handles transient socket accept errors without stopping to accept further connections.
• Fix race condition in cluster sharding when entity constructor fails - Resolves a race condition that could occur when an entity actor's constructor throws an exception.
• Fix race condition in QueueSink causing async enumerable timeout - Fixes a race condition in QueueSink that could cause timeouts when using async enumerables.
• Make RemotingTerminator non-FSM to avoid racy FSM log init - Fixes potential race conditions during actor system shutdown logging.

Performance Improvements

• LogMessage GetProperties without FrozenDictionary - Improves semantic logging performance by avoiding FrozenDictionary allocations in hot paths.
• Skip parsing PropertyNames when empty Parameters - Additional logging optimization that skips unnecessary parsing when log messages have no parameters.

New Features

• Akka.TestKit: configurable expect-no-message-default value - Fixes issue #​6675. You can now configure the default timeout for ExpectNoMsg() via HOCON:

  akka.test.expect-no-message-default = 100ms

6 contributors since release 1.5.57

COMMITS	LOC+	LOC-	AUTHOR
7	158	36	Aaron Stannard
2	483	55	Gregorius Soedharmo
2	11	41	Rolf Kristensen
1	100	22	Yaroslav Paslavskiy
1	37	53	Jarkko Pöyry
1	11	2	Petri Kero

Changes:

• c51ab05820fa4e292106715b979fded4ed6dd2a2 Add release notes for Akka.NET v1.5.58 (#​7985)
• 45e7f45871ae7a33ce0ce258fb45fead1a6557f0 Update API approval list
• cca19865c611ffe10704a9b4dee1df03bda0d2a8 LogMessage GetProperties without FrozenDictionary (#​7968)
• b22808e3baa19f376c982d0f9655027ac1c9fc39 Akka.TestKit: configurable expect-no-message-default value #​6675 (#​7006)
• efd3f0da8c42e05bee050a7b9854289075fde8ed Fix .NET 10 CLR shutdown hook breaking change (#​7964)
• 8027265086d36c9737a86f499201b377bc61061e Make RemotingTerminator non-FSM to avoid racy FSM log init. (#​7967)
• 0e8480e18f836a5b705cc8dd7fe6bc23ee6c9880 Fix timing race in BackpressureTimeout_must_succeed_if_subscriber_demand_arrives test (#​7972)
• 8aad0c3c9d45819ed6067bfa748151181ff72751 Fix race condition in QueueSink causing async enumerable timeout (#​7973)
• feb1102edf71b694df9bd3b4f08e0fd063a8e265 Fix race condition in multi-producer sharding delivery test (#​7975)
• 25cef789d726dc8cd012a85c0b5fcbef9d26b236 Fix WithinAsync timeout not propagating to EventFilter across async boundaries (#​7977)
  ... (truncated)

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