diff --git a/Tests/SuperLinq.Async.Test/TimeoutTest.cs b/Tests/SuperLinq.Async.Test/TimeoutTest.cs
index 79e6e26c..b3119723 100644
--- a/Tests/SuperLinq.Async.Test/TimeoutTest.cs
+++ b/Tests/SuperLinq.Async.Test/TimeoutTest.cs
@@ -61,9 +61,10 @@ public async Task TimeoutExceptionWithoutCancellation()
 	[Fact]
 	public async Task TimeoutExceptionWithoutOperationCanceledExceptionInnerException()
 	{
-		var sequence = new SequenceWithoutThrowIfCancellationRequested();
+		await using var ts = new SequenceWithoutThrowIfCancellationRequested()
+			.AsTestingSequence();
 
-		var result = sequence.Timeout(TimeSpan.FromMilliseconds(0));
+		var result = ts.Timeout(TimeSpan.FromMilliseconds(0));
 
 		var timeoutException = await Assert.ThrowsAsync<TimeoutException>(
 			async () => await result.Consume());
@@ -74,9 +75,10 @@ public async Task TimeoutExceptionWithoutOperationCanceledExceptionInnerExceptio
 	[Fact]
 	public async Task TimeoutExceptionWithOperationCanceledExceptionInnerException()
 	{
-		var sequence = new SequenceWithThrowIfCancellationRequested();
+		await using var ts = new SequenceWithThrowIfCancellationRequested()
+			.AsTestingSequence();
 
-		var result = sequence.Timeout(TimeSpan.FromMilliseconds(0));
+		var result = ts.Timeout(TimeSpan.FromMilliseconds(0));
 
 		var timeoutException = await Assert.ThrowsAsync<TimeoutException>(
 			async () => await result.Consume());