merit.gemspec in merit-3.0.3 vs merit.gemspec in merit-4.0.0

@@ -4,16 +4,18 @@
   s.description = "Manage badges, points and rankings (reputation) in your Rails app."
   s.homepage    = "https://github.com/merit-gem/merit"
   s.files       = `git ls-files`.split("\n").reject{|f| f =~ /^\./ }
   s.test_files  = `git ls-files -- test/*`.split("\n")
   s.license     = 'MIT'
-  s.version     = '3.0.3'
+  s.version     = '4.0.0'
   s.authors     = ["Tute Costa"]
   s.email       = '[e-mail]'
 
   s.required_ruby_version = '>= 2.3.0'
 
-  s.add_dependency 'ambry', '~> 1.0.0'
+  s.add_runtime_dependency 'ambry', '~> 1.0.0'
+  s.add_runtime_dependency 'zeitwerk'
+
   s.add_development_dependency 'rails', '>= 5.1.6'
   s.add_development_dependency 'capybara'
   s.add_development_dependency 'simplecov'
   s.add_development_dependency 'rubocop'
   s.add_development_dependency 'minitest-rails'