diff --git a/src/Cimpress.Cimbol/Cimpress.Cimbol.csproj b/src/Cimpress.Cimbol/Cimpress.Cimbol.csproj
index a94d368..1cb4e62 100644
--- a/src/Cimpress.Cimbol/Cimpress.Cimbol.csproj
+++ b/src/Cimpress.Cimbol/Cimpress.Cimbol.csproj
@@ -29,6 +29,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="System.Collections.Immutable" Version="6.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
   </ItemGroup>
 
 </Project>