diff --git a/sensu-plugins-elasticsearch.gemspec b/sensu-plugins-elasticsearch.gemspec
index 5ee2329..0600987 100644
--- a/sensu-plugins-elasticsearch.gemspec
+++ b/sensu-plugins-elasticsearch.gemspec
@@ -31,6 +31,11 @@ Gem::Specification.new do |s|
   s.platform               = Gem::Platform::RUBY
   s.required_ruby_version  = '>= 1.9.3'
 
+  s.add_runtime_dependency 'sensu-plugin', '1.1.0'
+  s.add_runtime_dependency 'json', '1.8.2'
+  s.add_runtime_dependency 'rest-client', '1.8.0'
+
+
   s.add_development_dependency 'codeclimate-test-reporter'
   s.add_development_dependency 'rubocop',       '0.17.0'
   s.add_development_dependency 'rspec',         '~> 3.1'