diff --git a/tests/Passwordless.Tests.Infra/Passwordless.Tests.Infra.csproj b/tests/Passwordless.Tests.Infra/Passwordless.Tests.Infra.csproj
index 1dda393..9e2b3dc 100644
--- a/tests/Passwordless.Tests.Infra/Passwordless.Tests.Infra.csproj
+++ b/tests/Passwordless.Tests.Infra/Passwordless.Tests.Infra.csproj
@@ -1,9 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>net6.0;net462</TargetFrameworks>
   </PropertyGroup>
 
+  <ItemGroup>
+    <AssemblyAttribute Include="System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverageAttribute" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
     <PackageReference Include="Testcontainers" Version="3.6.0" />
@@ -13,5 +17,4 @@
     <ProjectReference Include="..\..\src\Passwordless\Passwordless.csproj" />
   </ItemGroup>
 
-
 </Project>
diff --git a/tests/Passwordless.Tests.Infra/Polyfill.cs b/tests/Passwordless.Tests.Infra/Polyfill.cs
index fec03c3..6a38857 100644
--- a/tests/Passwordless.Tests.Infra/Polyfill.cs
+++ b/tests/Passwordless.Tests.Infra/Polyfill.cs
@@ -4,7 +4,16 @@
 // ReSharper disable InconsistentNaming
 // ReSharper disable PartialTypeWithSinglePart
 
-namespace System.Runtime.CompilerServices;
+namespace System.Runtime.CompilerServices
+{
+    public static class IsExternalInit;
+}
+#endif
 
-public static class IsExternalInit;
+#if NETFRAMEWORK
+namespace System.Diagnostics.CodeAnalysis
+{
+    [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Constructor | AttributeTargets.Event | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Struct, Inherited = false)]
+    public sealed class ExcludeFromCodeCoverageAttribute : Attribute;
+}
 #endif
\ No newline at end of file