Callisto cannot be upgraded in a project depending on .NET 4.5.2

[tehplague]

Callisto 1.4.0 cannot be upgraded in a solution that is configured to target .NET 4.5.2 because it is itself configured to target only .NETCore,Version=v4.5.1

Can this be changed in a future version?

[timheuer]

I just tried this an the NuGet package installed fine. Can you help me understand the exact setup you have?