Birst_Command.gemspec in Birst_Command-0.2.0 vs Birst_Command.gemspec in Birst_Command-0.2.1

@@ -10,11 +10,12 @@
   s.email       = ["[e-mail]"]
   s.homepage    = "https://github.com/gnilrets"
   s.license     = "MIT"
   s.summary     = "Birst Command"
   s.description = "Ruby interface to Birst web API"
-
   s.rubyforge_project = "Birst_Command"
+
+  s.required_ruby_version = '~> 2'
   s.add_runtime_dependency "savon", ["~> 2.0"]
   s.add_runtime_dependency "httpclient", ["~> 2.3"]
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")