Directory.Packages.props

<Project>

  <ItemGroup>
    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
    <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
    <PackageVersion Include="System.Memory" Version="4.5.5" />
    <PackageVersion Include="System.ValueTuple" Version="4.5.0" />
    <PackageVersion Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
  </ItemGroup>

</Project>