diff --git a/.travis.yml b/.travis.yml
index 11a115a..222078e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
 language: ruby
 rvm:
   - 1.9.3
+  - 2.0.0
diff --git a/rack-attack.gemspec b/rack-attack.gemspec
index 1cd56a0..8c1f1f3 100644
--- a/rack-attack.gemspec
+++ b/rack-attack.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'activesupport', '>= 3.0.0'
-  s.add_development_dependency 'debugger', '~> 1.1.3'
+  s.add_development_dependency 'debugger', '~> 1.5'
   s.add_development_dependency 'redis-activesupport'
   s.add_development_dependency 'dalli'
 end