diff --git a/impressionist.gemspec b/impressionist.gemspec
index a8cac0c..8f8d937 100644
--- a/impressionist.gemspec
+++ b/impressionist.gemspec
@@ -4,6 +4,7 @@ require File.expand_path('../lib/impressionist/version', __FILE__)
 Gem::Specification.new do |s|
   s.add_dependency 'httpclient', '~> 2.2'
   s.add_dependency 'nokogiri', '~> 1.5'
+  s.add_development_dependency 'rake', '>= 0.9'
   s.add_development_dependency 'rdoc', '>= 2.4.2'
   s.authors = ["cowboycoded"]
   s.description = "Log impressions from controller actions or from a model"