diff --git a/draper.gemspec b/draper.gemspec
index 8edfa7a..d4bc709 100644
--- a/draper.gemspec
+++ b/draper.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'activesupport', '~> 3.2'
   s.add_dependency 'actionpack', '~> 3.2'
 
-  s.add_development_dependency 'ammeter', '0.2.2'
+  s.add_development_dependency 'ammeter'
   s.add_development_dependency 'rake', '~> 0.9.2'
   s.add_development_dependency 'rspec', '~> 2.10'
   s.add_development_dependency 'yard'