diff --git a/jekyll.gemspec b/jekyll.gemspec
index 86df546b..ea593886 100644
--- a/jekyll.gemspec
+++ b/jekyll.gemspec
@@ -41,6 +41,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('rdiscount', "~> 1.6")
   s.add_development_dependency('redcarpet', "~> 2.1.1")
   s.add_development_dependency('launchy', "~> 2.1.2")
+  s.add_development_dependency('simplecov', "~> 0.7")
   
   # = MANIFEST =
   s.files = %w[