ipconverter.gemspec in ipconverter-0.3.1 vs ipconverter.gemspec in ipconverter-0.4.0

@@ -1,8 +1,9 @@
-# coding: utf-8
-lib = File.expand_path('../lib', __FILE__)
-ext = File.expand_path('../ext', __FILE__)
+# frozen_string_literal: true
+
+lib = File.expand_path('lib', __dir__)
+ext = File.expand_path('ext', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 $LOAD_PATH.unshift(ext) unless $LOAD_PATH.include?(ext)
 require 'ipconverter/version'
 
 Gem::Specification.new do |spec|
@@ -14,17 +15,19 @@
   spec.description   = 'Fast C extension for converting IP addresses from
 string to integer'
   spec.homepage      = 'http://github.com/joshuawscott/ipconverter'
   spec.license       = 'MIT'
 
+  spec.required_ruby_version = ">= 2.6.0"
+
   spec.files         = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.extensions    = ['ext/ipconverter/extconf.rb']
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
-  spec.require_paths = %w(lib ext)
+  spec.require_paths = %w[lib ext]
 
-  spec.add_development_dependency 'bundler', '~> 1.6'
-  spec.add_development_dependency 'rake', '~> 10'
+  spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'minitest', '~> 5'
-  spec.add_development_dependency 'rake-compiler', '~> 0.9'
-  spec.add_development_dependency 'rubocop', '~> 0.47'
+  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'rake-compiler', '~> 1.0'
+  spec.add_development_dependency 'rubocop', '~> 0.50'
 end