windows-pr requires win32-api (>= 1.2.1, runtime)

The problem is that gem can only find win32-api v 1.2.0

$ gem install win32-api
Building native extensions. This could take a while...
Successfully installed win32-api-1.2.0
1 gem installed
Installing ri documentation for win32-api-1.2.0...
Installing RDoc documentation for win32-api-1.2.0...

Sooo... where/how do I get 1.2.1?