1 files changed, 9 insertions, 14 deletions
diff --git a/ext/json/json.gemspec b/ext/json/json.gemspec
index d5f0a4de1d..64d0c81391 100644
--- a/ext/json/json.gemspec
+++ b/ext/json/json.gemspec
@@ -1,8 +1,10 @@
-# -*- encoding: utf-8 -*-
+version = File.foreach(File.join(__dir__, "lib/json/version.rb")) do |line|
+  /^\s*VERSION\s*=\s*'(.*)'/ =~ line and break $1
+end rescue nil
 
 Gem::Specification.new do |s|
   s.name = "json"
-  s.version = File.read(File.expand_path('../VERSION', __FILE__)).chomp
+  s.version = version
 
   s.summary = "JSON Implementation for Ruby"
   s.description = "This is a JSON implementation as a Ruby extension in C."
@@ -15,10 +17,8 @@ Gem::Specification.new do |s|
   s.rdoc_options = ["--title", "JSON implementation for Ruby", "--main", "README.md"]
   s.files = [
     "CHANGES.md",
-    "Gemfile",
     "LICENSE",
     "README.md",
-    "VERSION",
     "ext/json/ext/fbuffer/fbuffer.h",
     "ext/json/ext/generator/depend",
     "ext/json/ext/generator/extconf.rb",
@@ -48,26 +48,21 @@ Gem::Specification.new do |s|
     "lib/json/add/time.rb",
     "lib/json/common.rb",
     "lib/json/ext.rb",
-    "lib/json/ext/.keep",
     "lib/json/generic_object.rb",
     "lib/json/pure.rb",
     "lib/json/pure/generator.rb",
     "lib/json/pure/parser.rb",
     "lib/json/version.rb",
-  ] + Dir["tests/**/*"]
-  s.homepage = "http://flori.github.com/json"
+  ]
+  s.homepage = "https://flori.github.io/json"
   s.metadata = {
     'bug_tracker_uri'   => 'https://github.com/flori/json/issues',
     'changelog_uri'     => 'https://github.com/flori/json/blob/master/CHANGES.md',
-    'documentation_uri' => 'http://flori.github.io/json/doc/index.html',
-    'homepage_uri'      => 'http://flori.github.io/json/',
+    'documentation_uri' => 'https://flori.github.io/json/doc/index.html',
+    'homepage_uri'      => s.homepage,
     'source_code_uri'   => 'https://github.com/flori/json',
     'wiki_uri'          => 'https://github.com/flori/json/wiki'
   }
 
-  s.required_ruby_version = Gem::Requirement.new(">= 2.0")
-  s.test_files = ["tests/test_helper.rb"]
-
-  s.add_development_dependency "rake"
-  s.add_development_dependency "test-unit"
+  s.required_ruby_version = Gem::Requirement.new(">= 2.3")
 end