diff --git a/src/FastGenericNew.Tests/FastGenericNew.Tests.csproj b/src/FastGenericNew.Tests/FastGenericNew.Tests.csproj
index db7c4f6..2884ee5 100644
--- a/src/FastGenericNew.Tests/FastGenericNew.Tests.csproj
+++ b/src/FastGenericNew.Tests/FastGenericNew.Tests.csproj
@@ -21,7 +21,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-		<PackageReference Include="NUnit" Version="3.14.0" />
+		<PackageReference Include="NUnit" Version="4.0.0" />
 		<PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
 		<PackageReference Include="coverlet.collector" Version="6.0.0" />
 	</ItemGroup>