diff --git a/X10D.Tests/X10D.Tests.csproj b/X10D.Tests/X10D.Tests.csproj
index a5ca225..f5e35bc 100644
--- a/X10D.Tests/X10D.Tests.csproj
+++ b/X10D.Tests/X10D.Tests.csproj
@@ -1,18 +1,19 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net5.0</TargetFramework>
+        <TargetFramework>net6.0</TargetFramework>
         <IsPackable>false</IsPackable>
+        <Nullable>enable</Nullable>
         <EnablePreviewFeatures>True</EnablePreviewFeatures>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
-        <PackageReference Include="MSTest.TestAdapter" Version="2.2.4" />
-        <PackageReference Include="MSTest.TestFramework" Version="2.2.4" />
-        <PackageReference Include="coverlet.collector" Version="3.0.3">
-          <PrivateAssets>all</PrivateAssets>
-          <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0"/>
+        <PackageReference Include="MSTest.TestAdapter" Version="2.2.8"/>
+        <PackageReference Include="MSTest.TestFramework" Version="2.2.8"/>
+        <PackageReference Include="coverlet.collector" Version="3.1.2">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
         <PackageReference Include="System.Runtime.Experimental" Version="6.0.2-mauipre.1.22054.8"/>
     </ItemGroup>
@@ -22,8 +23,8 @@
     </ItemGroup>
 
     <ItemGroup>
-        <None Remove="1000primes.txt" />
-        <EmbeddedResource Include="1000primes.txt" />
+        <None Remove="1000primes.txt"/>
+        <EmbeddedResource Include="1000primes.txt"/>
     </ItemGroup>
 
 </Project>