diff --git a/uh-wm.gemspec b/uh-wm.gemspec
index 23e19b6..600c9f7 100644
--- a/uh-wm.gemspec
+++ b/uh-wm.gemspec
@@ -13,4 +13,6 @@ Gem::Specification.new do |s|
   s.files       = `git ls-files`.split $/
   s.test_files  = s.files.grep /\A(spec|features)\//
   s.executables = s.files.grep(/\Abin\//) { |f| File.basename(f) }
+
+  s.add_dependency 'uh', '~> 2.0'
 end