command_model.gemspec in command_model-1.3.0 vs command_model.gemspec in command_model-2.0.0

@@ -13,14 +13,12 @@
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.name          = "command_model"
   gem.require_paths = ["lib"]
   gem.version       = CommandModel::VERSION
 
-  gem.add_dependency 'activemodel', "> 4.2"
+  gem.required_ruby_version = '>= 2.5.0'
 
-  gem.add_development_dependency 'rake', "~> 11.3.0"
-  gem.add_development_dependency 'rspec', "~> 2.14.1"
-  gem.add_development_dependency 'guard', "~> 2.14.2"
-  gem.add_development_dependency 'guard-rspec', "~> 3.1.0"
-  gem.add_development_dependency 'rb-fsevent', '~> 0.10.2'
+  gem.add_dependency 'activemodel', "> 5.0"
 
+  gem.add_development_dependency 'rake', "~> 12.3.0"
+  gem.add_development_dependency 'rspec', "~> 3.7.0"
 end