diff --git a/tests/NHapi.NUnit.SourceGeneration/NHapi.NUnit.SourceGeneration.csproj b/tests/NHapi.NUnit.SourceGeneration/NHapi.NUnit.SourceGeneration.csproj
index b4da05d0e..c60a4a7bf 100644
--- a/tests/NHapi.NUnit.SourceGeneration/NHapi.NUnit.SourceGeneration.csproj
+++ b/tests/NHapi.NUnit.SourceGeneration/NHapi.NUnit.SourceGeneration.csproj
@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="4.1.0" />
+    <PackageReference Include="NUnit" Version="4.2.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">