suo.gemspec in suo-0.1.2 vs suo.gemspec in suo-0.1.3

@@ -18,9 +18,11 @@
   spec.bindir        = "bin"
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
+  spec.required_ruby_version = "~> 2.0"
+
   spec.add_dependency "dalli"
   spec.add_dependency "redis"
   spec.add_dependency "msgpack"
 
   spec.add_development_dependency "bundler", "~> 1.5"