head_music.gemspec in head_music-0.6.1 vs head_music.gemspec in head_music-0.6.3

@@ -19,9 +19,11 @@
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
+  spec.required_ruby_version = '~> 2.3'
+
   spec.add_runtime_dependency "activesupport", "~> 5.0"
   spec.add_runtime_dependency "humanize", "~> 1.3"
 
   spec.add_development_dependency "bundler", "~> 1.13"
   spec.add_development_dependency "rake", "~> 10.0"