activeadmin-rb.gemspec in activeadmin-rb-1.4.0 vs activeadmin-rb.gemspec in activeadmin-rb-1.5.0

@@ -14,19 +14,20 @@
     f.match(%r{^(spec|features)/})
   end
 
   s.test_files = `git ls-files -- {spec,features}/*`.split("\n")
 
-  s.required_ruby_version = '>= 2.3'
+  s.required_ruby_version = '>= 2.4'
 
   s.add_dependency 'arbre', '>= 1.1.1'
   s.add_dependency 'coffee-rails'
   s.add_dependency 'formtastic', '~> 3.1'
   s.add_dependency 'formtastic_i18n'
   s.add_dependency 'inherited_resources', '>= 1.9.0'
   s.add_dependency 'jquery-rails', '>= 4.2.0'
+  s.add_dependency 'jquery-ui-rails', '~> 6.0'
   s.add_dependency 'kaminari', '>= 0.15'
-  s.add_dependency 'railties', '>= 4.2', '< 5.3'
+  s.add_dependency 'railties', '>= 4.2'
   s.add_dependency 'ransack', '>= 1.8.7'
   s.add_dependency 'sass', '~> 3.1'
   s.add_dependency 'sprockets', '< 4.1'
 end