diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index 53153f91..d0b0f2b5 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -24,7 +24,7 @@
     <PackageVersion Include="SharpCompress" Version="0.34.1" />
     <PackageVersion Include="System.CodeDom" Version="7.0.0" />
     <PackageVersion Include="System.Security.Permissions" Version="7.0.0" />
-    <PackageVersion Include="xunit" Version="2.5.3" />
+    <PackageVersion Include="xunit" Version="2.6.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.3" />
     <PackageVersion Include="XunitXml.TestLogger" Version="3.1.17" />
     <PackageVersion Include="YamlDotNet" Version="13.7.1" />
diff --git a/src/Snapx.Tests/Core/DistributedMutexTests.cs b/src/Snapx.Tests/Core/DistributedMutexTests.cs
index 25f8f6c2..fc82c0f2 100644
--- a/src/Snapx.Tests/Core/DistributedMutexTests.cs
+++ b/src/Snapx.Tests/Core/DistributedMutexTests.cs
@@ -8,7 +8,7 @@
 
 namespace Snapx.Tests.Core;
 
-public class DistributedMutexTests 
+public sealed class DistributedMutexTests 
 {
     [Fact]
     public async Task TestAcquireAsync()
@@ -52,7 +52,7 @@ public async Task TestAcquireAsync_ReturnsInvalidChallengeValue()
 
         await using var distributedMutex = new DistributedMutex(distributedMutexClientMock.Object, new LogProvider.NoOpLogger(), mutexName, CancellationToken.None);
 
-        var ex = await Assert.ThrowsAsync<DistributedMutexUnknownException>(async () => await distributedMutex.TryAquireAsync());
+        var ex = await Assert.ThrowsAsync<DistributedMutexUnknownException>(() => distributedMutex.TryAquireAsync());
         Assert.Equal($"Challenge should not be null or empty. Mutex: {mutexName}. Challenge: {expectedChallenge}", ex.Message);
 
         Assert.False(distributedMutex.Acquired);
@@ -198,4 +198,4 @@ public async Task TestDisposeAsync_Mutex_Is_Not_Acquired()
         distributedMutexClientMock.Verify(x => x
             .ReleaseLockAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<TimeSpan?>()), Times.Never);
     }
-}
\ No newline at end of file
+}