Package lwgeom (0.2-4) fails to install on Shinyapps.io with an "upgrade GEOS to 3.6.0 or later" error

Could this possibly be due to the upgrade for GDAL and PROJ libraries,
please?

Erin,

I learned a while ago that when any of proj, geos, and gdal are upgraded I
need to rebuid tools higher in that chain. If you have a new geos version
then a new gdal build is in order.

If this does not address your issue please excuse my responding.

Regards,

Rich