diff --git a/activeadmin-mongoid.gemspec b/activeadmin-mongoid.gemspec
index 59d1f48..2d20305 100644
--- a/activeadmin-mongoid.gemspec
+++ b/activeadmin-mongoid.gemspec
@@ -20,6 +20,7 @@ Gem::Specification.new do |gem|
 
   gem.add_runtime_dependency 'mongoid',     ['> 3.0', '< 5.0']
   gem.add_runtime_dependency 'activeadmin', '~> 0.6'
+  gem.add_runtime_dependency 'jquery-rails', '< 3.0' # in which they remove jquery-ui
   gem.add_runtime_dependency 'sass-rails',  ['>= 3.1.4', '< 5.0']
 
   gem.add_development_dependency 'rspec-rails',  '~> 2.7'