diff --git a/src/ClaudeDo.Ui/Services/WorkerClient.cs b/src/ClaudeDo.Ui/Services/WorkerClient.cs
index 08562f0..3570e9b 100644
--- a/src/ClaudeDo.Ui/Services/WorkerClient.cs
+++ b/src/ClaudeDo.Ui/Services/WorkerClient.cs
@@ -182,6 +182,7 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable
 
     public async ValueTask DisposeAsync()
     {
+        _startCts?.Cancel();
         await _hub.DisposeAsync();
     }