jekyll-indico.gemspec in jekyll-indico-0.5.0 vs jekyll-indico.gemspec in jekyll-indico-0.6.0

@@ -18,11 +18,11 @@
     spec.metadata['homepage_uri'] = spec.homepage
     spec.metadata['source_code_uri'] = 'https://github.com/iris-hep/jekyll-indico'
     spec.metadata['changelog_uri'] = 'https://github.com/iris-hep/jekyll-indico/blob/main/CHANGELOG.md'
   else
     raise 'RubyGems 2.0 or newer is required to protect against ' \
-      'public gem pushes.'
+          'public gem pushes.'
   end
 
   # 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
@@ -30,16 +30,17 @@
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.4.0'
+  spec.required_ruby_version = '>= 2.6.0'
 
   spec.add_dependency 'jekyll', '>= 3.8', '< 5.0'
 
-  spec.add_development_dependency 'bundler', '~> 2.0'
+  spec.add_development_dependency 'bundler', '~> 2.1'
   spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
-  spec.add_development_dependency 'rubocop', '~> 1.9'
-  spec.add_development_dependency 'rubocop-rake', '~> 0.5'
+  spec.add_development_dependency 'rubocop', '~> 1.25'
+  spec.add_development_dependency 'rubocop-rake', '~> 0.6'
   spec.add_development_dependency 'rubocop-rspec', '~> 2.2'
+  spec.metadata['rubygems_mfa_required'] = 'true'
 end