diff --git a/csharp/PhoneNumbers.Extensions.Test/PhoneNumbers.Extensions.Test.csproj b/csharp/PhoneNumbers.Extensions.Test/PhoneNumbers.Extensions.Test.csproj
index d8344bf1..3aaa360c 100644
--- a/csharp/PhoneNumbers.Extensions.Test/PhoneNumbers.Extensions.Test.csproj
+++ b/csharp/PhoneNumbers.Extensions.Test/PhoneNumbers.Extensions.Test.csproj
@@ -15,9 +15,9 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-        <PackageReference Include="xunit" Version="2.8.0" />
-        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.0">
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+        <PackageReference Include="xunit" Version="2.8.1" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>