ob64.gemspec in ob64-0.3.0 vs ob64.gemspec in ob64-0.4.0

@@ -7,22 +7,26 @@
   spec.name = "ob64"
   spec.version = Ob64::VERSION
   spec.authors = ["João Fernandes"]
   spec.email = ["[e-mail]"]
   spec.homepage = "https://github.com/jcmfernandes/ob64"
-
+  spec.license = "MIT"
   spec.summary = "A fast Base64 encoder and decoder."
   spec.description = "A fast Base64 encoder and decoder that makes use of SIMD extensions."
 
-  spec.license = "MIT"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.5.0")
-
-  spec.metadata["homepage_uri"] = spec.homepage
-
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files = Dir.chdir(File.expand_path(__dir__)) do
     `git ls-files -z`.split("\x0").reject { |f| f.match(%r{\A(?:test|spec|features)/}) }
   end
   spec.require_paths = ["lib"]
   spec.extensions = ["ext/ob64/extconf.rb"]
+
+  spec.metadata = {
+    "homepage_uri" => spec.homepage,
+    "changelog_uri" => spec.homepage + "/blob/master/CHANGELOG.md",
+    "documentation_uri" => "https://www.rubydoc.info/gems/ob64/#{spec.version}",
+    "source_code_uri" => spec.homepage + "/tree/v#{spec.version}"
+  }
+
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.5.0")
 end