$ gem list rubyzip

*** LOCAL GEMS ***

rubyzip (1.1.0, 0.9.9)

$ sudo gem uninstall rubyzip

Select gem to uninstall:
 1. rubyzip-0.9.9
 2. rubyzip-1.1.0
 3. All versions
> 3

You have requested to uninstall the gem:
	rubyzip-0.9.9

calabash-android-0.4.18 depends on rubyzip (~> 0.9.9)
cucumber-1.3.10 depends on rubyzip (< 1.0, development)
xamarin-test-cloud-0.9.26 depends on rubyzip (~> 0.9.9)
If you remove this gem, these dependencies will not be met.