cross-build missing dependence

I can't build sbt-s3-resolver:

[warn] 	::::::::::::::::::::::::::::::::::::::::::::::
[warn] 	::          UNRESOLVED DEPENDENCIES         ::
[warn] 	::::::::::::::::::::::::::::::::::::::::::::::
[warn] 	:: net.virtual-void#sbt-cross-building;0.8.0: not found
[warn] 	::::::::::::::::::::::::::::::::::::::::::::::