mercenary.gemspec in mercenary-0.3.6 vs mercenary.gemspec in mercenary-0.4.0

@@ -1,24 +1,28 @@
-# coding: utf-8
-lib = File.expand_path('../lib', __FILE__)
+# frozen_string_literal: true
+
+lib = File.expand_path("lib", __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
-require 'mercenary/version'
+require "mercenary/version"
 
 Gem::Specification.new do |spec|
   spec.name          = "mercenary"
   spec.version       = Mercenary::VERSION
   spec.authors       = ["Tom Preston-Werner", "Parker Moore"]
   spec.email         = ["[e-mail]", "[e-mail]"]
-  spec.description   = %q{Lightweight and flexible library for writing command-line apps in Ruby.}
-  spec.summary       = %q{Lightweight and flexible library for writing command-line apps in Ruby.}
+  spec.description   = "Lightweight and flexible library for writing command-line apps in Ruby."
+  spec.summary       = "Lightweight and flexible library for writing command-line apps in Ruby."
   spec.homepage      = "https://github.com/jekyll/mercenary"
   spec.license       = "MIT"
 
-  spec.files         = `git ls-files`.split($/)
-  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
-  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
+  spec.files         = `git ls-files`.split($INPUT_RECORD_SEPARATOR)
+  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.add_development_dependency "bundler", "~> 1.3"
+  spec.required_ruby_version = ">= 2.4.0"
+
+  spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "rubocop-jekyll", "~> 0.10.0"
 end