r2-oas.gemspec in r2-oas-0.4.1 vs r2-oas.gemspec in r2-oas-0.5.0

@@ -25,10 +25,10 @@
   # Specify which files should be added to the gem when it is released.
   spec.files         = Dir["CHANGELOG.md", "GEMSPEC.md", "README.md", "README.ja.md", "LICENSE.txt", "lib/**/*", "r2-oas.gemspec"]
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
-  spec.required_ruby_version = Gem::Requirement.new('>= 2.3.3p222')
+  spec.required_ruby_version = Gem::Requirement.new('>= 2.5.0')
 
   spec.add_runtime_dependency 'docker-api', '>= 1.34.2'
   spec.add_runtime_dependency 'easy_diff', '>= 1.0.0'
   spec.add_runtime_dependency 'eventmachine', '>= 1.2.0'
   spec.add_runtime_dependency 'key_flatten', '>= 1.0.0'