Cannot pkg upgrade WindowMaker 0.95.7 -> 0.95.8

[James Geering]

Hi All,
I have just noticed that WindowMaker 0.95.8 has been 
released in the freshports site; previously I was incorrectly
trying to build this myself from the windowmaker site.  So now I
see I'm able to utilise the binary package manager directly.

freeBSD Version 11.1-release #0 r321309 amd64.
WindowMaker 0.95.7.

When I run "pkg version -vL=" the output does indeed
show that windowmaker-0.95.7_5 requires updating to 0.95.8,
however, when I try and run "pkg upgrade windowmaker" it reports
that it I already have the latest version.  
I also perform a "portsnap fetch update" but this did not change.
the outcome.
What am I missing here please? - it seems like these steps should work.
Many thanks,
James