diff --git a/csharp/Platform.IO.Tests/Platform.IO.Tests.csproj b/csharp/Platform.IO.Tests/Platform.IO.Tests.csproj
index bcb0eda..d7a79b6 100644
--- a/csharp/Platform.IO.Tests/Platform.IO.Tests.csproj
+++ b/csharp/Platform.IO.Tests/Platform.IO.Tests.csproj
@@ -11,7 +11,7 @@
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   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" PrivateAssets="All" />
     <PackageReference Include="coverlet.collector" Version="3.0.3" PrivateAssets="All" />