rack.gemspec in rack-2.2.10 vs rack.gemspec in rack-3.0.0.beta1

@@ -16,31 +16,31 @@
     servers, web frameworks, and software in between (the so-called
     middleware) into a single method call.
   EOF
 
   s.files = Dir['{bin/*,contrib/*,example/*,lib/**/*}'] +
-    %w(MIT-LICENSE rack.gemspec Rakefile README.rdoc SPEC.rdoc)
+    %w(MIT-LICENSE rack.gemspec Rakefile README.md SPEC.rdoc)
 
   s.bindir = 'bin'
-  s.executables << 'rackup'
   s.require_path = 'lib'
-  s.extra_rdoc_files = ['README.rdoc', 'CHANGELOG.md', 'CONTRIBUTING.md']
+  s.extra_rdoc_files = ['README.md', 'CHANGELOG.md', 'CONTRIBUTING.md']
 
   s.author = 'Leah Neukirchen'
   s.email = '[e-mail]'
 
   s.homepage = 'https://github.com/rack/rack'
 
-  s.required_ruby_version = '>= 2.3.0'
+  s.required_ruby_version = '>= 2.4.0'
 
   s.metadata = {
     "bug_tracker_uri" => "https://github.com/rack/rack/issues",
-    "changelog_uri" => "https://github.com/rack/rack/blob/master/CHANGELOG.md",
+    "changelog_uri" => "https://github.com/rack/rack/blob/main/CHANGELOG.md",
     "documentation_uri" => "https://rubydoc.info/github/rack/rack",
     "source_code_uri"   => "https://github.com/rack/rack"
   }
 
   s.add_development_dependency 'minitest', "~> 5.0"
-  s.add_development_dependency 'minitest-sprint'
   s.add_development_dependency 'minitest-global_expectations'
+
+  s.add_development_dependency 'bundler'
   s.add_development_dependency 'rake'
 end