zlib.gemspec in zlib-0.1.0 vs zlib.gemspec in zlib-1.0.0

@@ -1,11 +1,11 @@
 # coding: utf-8
 # frozen_string_literal: true
 Gem::Specification.new do |spec|
   spec.name          = "zlib"
-  spec.version       = "0.1.0"
-  spec.date          = '2017-09-13'
+  spec.version       = "1.0.0"
+  spec.date          = '2017-12-11'
   spec.authors       = ["Yukihiro Matsumoto", "UENO Katsuhiro"]
   spec.email         = ["[e-mail]", nil]
 
   spec.summary       = %q{Ruby interface for the zlib compression/decompression library}
   spec.description   = %q{Ruby interface for the zlib compression/decompression library}
@@ -15,10 +15,10 @@
   spec.files         = [".gitignore", ".travis.yml", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "ext/zlib/extconf.rb", "ext/zlib/zlib.c", "zlib.gemspec"]
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
   spec.extensions    = "ext/zlib/extconf.rb"
-  spec.required_ruby_version = ">= 2.5.0dev"
+  spec.required_ruby_version = ">= 2.3.0"
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rake-compiler"
 end