diff --git a/microformats2.gemspec b/microformats2.gemspec
index 074a483..9dc26ee 100644
--- a/microformats2.gemspec
+++ b/microformats2.gemspec
@@ -26,6 +26,5 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency "guard-rspec", "~> 2.1.0"
   gem.add_development_dependency "rb-fsevent", "~> 0.9.1"
   gem.add_development_dependency "simplecov", "~> 0.7.1"
-  gem.add_development_dependency "debugger", "~> 1.2.1"
   gem.add_development_dependency "webmock", "~> 1.12.3"
 end