wand.gemspec in wand-0.3 vs wand.gemspec in wand-0.4

@@ -11,9 +11,10 @@
   s.homepage    = "http://github.com/jnunemaker/wand"
   s.summary     = %q{Mime-Type gem with fallback to unix file command}
   s.description = %q{Mime-Type gem with fallback to unix file command}
 
   s.add_dependency 'mime-types'
+  s.add_dependency 'safe_shell', '~> 1.0.0'
 
   s.add_development_dependency 'shoulda'
   s.add_development_dependency 'mocha'
 
   s.files         = `git ls-files`.split("\n")