vmail.gemspec in vmail-1.5.3 vs vmail.gemspec in vmail-1.5.4

@@ -4,9 +4,11 @@
 
 Gem::Specification.new do |s|
   s.name        = "vmail"
   s.version     = Vmail::VERSION
   s.platform    = Gem::Platform::RUBY
+  s.required_ruby_version = '>= 1.9.0'
+
   s.authors     = ["Daniel Choi"]
   s.email       = ["[e-mail]"]
   s.homepage    = "http://danielchoi.com/software/vmail.html"
   s.summary     = %q{A Vim interface to Gmail}
   s.description = %q{Manage your email with Vim}