diff --git a/tests/ClaudeDo.Worker.Tests/Runner/FailureDiagnosisTests.cs b/tests/ClaudeDo.Worker.Tests/Runner/FailureDiagnosisTests.cs
index a647284a..1490fba6 100644
--- a/tests/ClaudeDo.Worker.Tests/Runner/FailureDiagnosisTests.cs
+++ b/tests/ClaudeDo.Worker.Tests/Runner/FailureDiagnosisTests.cs
@@ -111,7 +111,7 @@ public sealed class FailureDiagnosisEndToEndTests : IDisposable
         var wt = new WorktreeManager(new GitService(), dbFactory, _cfg, NullLogger<WorktreeManager>.Instance);
         return new TaskRunner(fake, dbFactory, new HubBroadcaster(new CapturingHubContext()), wt,
             new ClaudeArgsBuilder(), _cfg, NullLogger<TaskRunner>.Instance, state, new TaskRunTokenRegistry(),
-            new AttachmentStore(), new FakeSessionSkillSeeder());
+            new AttachmentStore(), new FakeSessionSkillSeeder(), new FakeTranscriptUsageReader());
     }
 
     [Fact]