fluent-plugin-festival.gemspec in fluent-plugin-festival-0.0.3 vs fluent-plugin-festival.gemspec in fluent-plugin-festival-0.0.4

@@ -2,11 +2,11 @@
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 Gem::Specification.new do |spec|
   spec.name          = "fluent-plugin-festival"
-  spec.version       = "0.0.3"
+  spec.version       = "0.0.4"
   spec.authors       = ["Toyokazu Akiyama"]
   spec.email         = ["[e-mail]"]
 
   spec.summary       = %q{Fluent Input/Output plugin for FESTIVAL platform}
   spec.description   = %q{Fluent Input/Output plugin for FESTIVAL platform}
@@ -16,10 +16,10 @@
   spec.files         = `git ls-files`.gsub(/.+images\/[\w\.-]+\n/, "").split($/)
   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 = '>= 2.1.0'
+  spec.required_ruby_version = '>= 2.2.0'
 
   spec.add_dependency 'fluentd', '~> 0.14.0'
 
   spec.add_development_dependency "bundler", "~> 1.14"
   spec.add_development_dependency "rake", "~> 12.0"