diff --git a/Directory.Packages.props b/Directory.Packages.props
index d2bdff157a..91c63a0cd7 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -29,7 +29,7 @@
 	<PackageVersion Include="Mono.Cecil" Version="0.11.5" />
 	<PackageVersion Include="NSubstitute" Version="5.0.0" />
 	<PackageVersion Include="NSubstitute.Analyzers.CSharp" Version="1.0.16" />
-	<PackageVersion Include="NUnit" Version="4.0.0" />
+	<PackageVersion Include="NUnit" Version="4.1.0-adev.1" />
 	<PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
 	<PackageVersion Include="NuGet.Protocol" Version="6.8.0" />
 	<PackageVersion Include="PowerShellStandard.Library" Version="5.1.1" />
diff --git a/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj b/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj
index e042411562..fe356566c2 100644
--- a/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj
+++ b/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj
@@ -6,7 +6,6 @@
     <RuntimeIdentifier>win-x64</RuntimeIdentifier>
     <IsPackable>false</IsPackable>
     <StartupObject>AutoGeneratedProgram</StartupObject>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
 
@@ -110,7 +109,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Compile Include="..\ILSpy.Tests\Workaround4564.cs" Link="Workaround4564.cs" />
     <Compile Include="DisassemblerPrettyTestRunner.cs" />
     <Compile Include="Helpers\RoslynToolset.cs" />
     <Compile Include="Output\InsertParenthesesVisitorTests.cs" />
diff --git a/ILSpy.BamlDecompiler.Tests/ILSpy.BamlDecompiler.Tests.csproj b/ILSpy.BamlDecompiler.Tests/ILSpy.BamlDecompiler.Tests.csproj
index 4655b74f8a..5ff532b129 100644
--- a/ILSpy.BamlDecompiler.Tests/ILSpy.BamlDecompiler.Tests.csproj
+++ b/ILSpy.BamlDecompiler.Tests/ILSpy.BamlDecompiler.Tests.csproj
@@ -6,7 +6,6 @@
     <RuntimeIdentifier>win-x64</RuntimeIdentifier>
     <IsPackable>false</IsPackable>
     <StartupObject>AutoGeneratedProgram</StartupObject>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 
     <EnableDefaultItems>false</EnableDefaultItems>
     <UseWpf>true</UseWpf>
@@ -46,7 +45,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Compile Include="..\ILSpy.Tests\Workaround4564.cs" Link="Workaround4564.cs" />
     <Compile Include="BamlTestRunner.cs" />
     <Compile Include="Cases\AttachedEvent.xaml.cs">
       <DependentUpon>AttachedEvent.xaml</DependentUpon>
diff --git a/ILSpy.Tests/ILSpy.Tests.csproj b/ILSpy.Tests/ILSpy.Tests.csproj
index 89ca30c6a5..c5e5771c68 100644
--- a/ILSpy.Tests/ILSpy.Tests.csproj
+++ b/ILSpy.Tests/ILSpy.Tests.csproj
@@ -5,7 +5,6 @@
     <TargetFramework>net8.0-windows</TargetFramework>
     <IsPackable>false</IsPackable>
     <StartupObject>AutoGeneratedProgram</StartupObject>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
 
@@ -39,7 +38,6 @@
     <Compile Include="Analyzers\MethodUsesAnalyzerTests.cs" />
     <Compile Include="Analyzers\TestCases\MainAssembly.cs" />
     <Compile Include="Analyzers\TypeUsedByAnalyzerTests.cs" />
-    <Compile Include="Workaround4564.cs" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/ILSpy.Tests/Workaround4564.cs b/ILSpy.Tests/Workaround4564.cs
deleted file mode 100644
index 257afcc2bc..0000000000
--- a/ILSpy.Tests/Workaround4564.cs
+++ /dev/null
@@ -1,4 +0,0 @@
-// https://github.com/nunit/nunit/issues/4564
-
-[assembly: System.Runtime.Versioning.SupportedOSPlatform("Windows10")]
-[assembly: System.Runtime.Versioning.TargetPlatform("Windows10")]
\ No newline at end of file
diff --git a/NuGet.config b/NuGet.config
index 8c93079308..bb1becdcc5 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -5,6 +5,7 @@
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
     <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
     <add key="dotnet8-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet8-transport/nuget/v3/index.json" />
+    <add key="myget" value="https://www.myget.org/F/nunit/api/v3/index.json" />
   </packageSources>
   <packageSourceMapping>
     <packageSource key="nuget.org">
@@ -19,5 +20,8 @@
       <package pattern="Microsoft.DiaSymReader.Converter.Xml" />
       <package pattern="Microsoft.DiaSymReader.PortablePdb" />
     </packageSource>
+    <packageSource key="myget">
+      <package pattern="NUnit" />
+    </packageSource>
   </packageSourceMapping> -->
 </configuration>