diff --git a/tests/PolySharp.NuGet/PolySharp.NuGet.csproj b/tests/PolySharp.NuGet/PolySharp.NuGet.csproj
index 9797912..6580709 100644
--- a/tests/PolySharp.NuGet/PolySharp.NuGet.csproj
+++ b/tests/PolySharp.NuGet/PolySharp.NuGet.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net472;net48;net481;netstandard2.0;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks>net472;net48;net481;netstandard2.0;net6.0;net7.0;net8.0</TargetFrameworks>
     <RestoreSources>
       https://api.nuget.org/v3/index.json;
       ..\..\artifacts;
diff --git a/tests/PolySharp.Tests/PolySharp.Tests.csproj b/tests/PolySharp.Tests/PolySharp.Tests.csproj
index 3a77e03..bce7973 100644
--- a/tests/PolySharp.Tests/PolySharp.Tests.csproj
+++ b/tests/PolySharp.Tests/PolySharp.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net472;net48;netstandard2.0;netstandard2.1;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks>net472;net48;netstandard2.0;netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
     <PolySharpIncludeRuntimeSupportedAttributes>true</PolySharpIncludeRuntimeSupportedAttributes>
   </PropertyGroup>
 
diff --git a/tests/PolySharp.TypeForwards.Tests/PolySharp.TypeForwards.Tests.csproj b/tests/PolySharp.TypeForwards.Tests/PolySharp.TypeForwards.Tests.csproj
index a93070c..3b176d6 100644
--- a/tests/PolySharp.TypeForwards.Tests/PolySharp.TypeForwards.Tests.csproj
+++ b/tests/PolySharp.TypeForwards.Tests/PolySharp.TypeForwards.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net472;net48;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks>net472;net48;net6.0;net7.0;net8.0</TargetFrameworks>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
     <PolySharpUsePublicAccessibilityForGeneratedTypes>true</PolySharpUsePublicAccessibilityForGeneratedTypes>
   </PropertyGroup>
@@ -11,9 +11,9 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net472' OR '$(TargetFramework)' == 'net48'">