fileutils.gemspec in fileutils-1.1.0 vs fileutils.gemspec in fileutils-1.2.0

@@ -1,14 +1,21 @@
 # frozen_string_literal: true
 
+begin
+  require_relative "lib/fileutils/version"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "version"
+end
+
 Gem::Specification.new do |s|
   s.name = "fileutils"
-  s.version = '1.1.0'
+  s.version = FileUtils::VERSION
   s.summary = "Several file utility methods for copying, moving, removing, etc."
   s.description = "Several file utility methods for copying, moving, removing, etc."
 
   s.require_path = %w{lib}
-  s.files = [".gitignore", ".travis.yml", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "fileutils.gemspec", "lib/fileutils.rb"]
+  s.files = ["LICENSE.txt", "README.md", "Rakefile", "fileutils.gemspec", "lib/fileutils.rb", "lib/fileutils/version.rb"]
   s.required_ruby_version = ">= 2.3.0"
 
   s.authors = ["Minero Aoki"]
   s.email = [nil]
   s.homepage = "https://github.com/ruby/fileutils"