Index: Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.TestUtil/Ringtoets.AssemblyTool.IO.TestUtil.csproj
===================================================================
diff -u -r9db8cb56b754aa7098da5dfc4201d3d98d6eaf5d -rf98d0ea5ec2ccf5785d2f94f3df9ed44f5fb2a08
--- Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.TestUtil/Ringtoets.AssemblyTool.IO.TestUtil.csproj	(.../Ringtoets.AssemblyTool.IO.TestUtil.csproj)	(revision 9db8cb56b754aa7098da5dfc4201d3d98d6eaf5d)
+++ Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.TestUtil/Ringtoets.AssemblyTool.IO.TestUtil.csproj	(.../Ringtoets.AssemblyTool.IO.TestUtil.csproj)	(revision f98d0ea5ec2ccf5785d2f94f3df9ed44f5fb2a08)
@@ -8,10 +8,18 @@
   <Import Project="$(SolutionDir)\build\Ringtoets_TestUtil.targets" />
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SerializableAttributeTestHelper.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\..\..\build\Copying.licenseheader">
       <Link>Copying.licenseheader</Link>
     </None>
+    <None Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Reference Include="nunit.framework, Version=3.8.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
+      <HintPath>..\..\..\..\packages\NUnit.3.8.1\lib\net40\nunit.framework.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Xml" />
+  </ItemGroup>
 </Project>
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