Force Nuget package to use specific version of sub dependency?

When installing the two Nuget packages Hl7.Fhir.DSTU2 and Hl7.Fhir.R4, we get something like this:

The package DSTU2 seems to have issues using Hl7.Fhir.Support.Poco version 3.4.0.If we install DSTU2 on it's own, all packages are using the version 1.9.0.

Is there a way in the .csproj file to specify sub dependencies versions and have the .dll installed in specific folders?

Here are the 3.4.0 versions .dll in my debug folder