diff --git a/paper_trail.gemspec b/paper_trail.gemspec
index a7fb67cd..91074e5c 100644
--- a/paper_trail.gemspec
+++ b/paper_trail.gemspec
@@ -17,6 +17,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'rails', '~> 3'
 
+  s.add_development_dependency 'rake'
   s.add_development_dependency 'shoulda',      '2.10.3'
   s.add_development_dependency 'sqlite3-ruby', '~> 1.2'
   s.add_development_dependency 'capybara',     '>= 0.4.0'