solve.gemspec in solve-2.0.3 vs solve.gemspec in solve-3.0.0

@@ -12,10 +12,10 @@
   s.executables           = s.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   s.test_files            = s.files.grep(%r{^spec/})
   s.name                  = "solve"
   s.require_paths         = ["lib"]
   s.version               = Solve::VERSION
-  s.required_ruby_version = ">= 1.9.1"
+  s.required_ruby_version = ">= 2.1.0"
 
   s.add_dependency "semverse",     "~> 1.1"
   s.add_dependency "molinillo",    "~> 0.4.2"
 
   s.add_development_dependency 'thor', '>= 0.16.0'