I recall that it's necessary.  See
https://github.com/schisamo/em-winrm/pull/9


On Thu, Aug 15, 2013 at 2:46 PM, Adam Edwards <notifications@github.com>wrote:

> In knife-windows.gemspec:
>
> > @@ -15,7 +15,7 @@ Gem::Specification.new do |s|
> >    s.description = s.summary
> >
> >    s.required_ruby_version	= ">= 1.9.1"
> > -  s.add_dependency "em-winrm", "= 0.5.4"
> > +  s.add_dependency "em-winrm", "= 0.5.5"
>
> Is the update necessary, or will it work fine with the current 0.5.4?
>
> —
> Reply to this email directly or view it on GitHub<https://github.com/opscode/knife-windows/pull/50/files#r5797013>
> .
>