diff --git a/Rakefile b/Rakefile
index 8e7a10f..788cef9 100644
--- a/Rakefile
+++ b/Rakefile
@@ -21,6 +21,7 @@ begin
     gemspec.homepage = "http://github.com/cyu/rack-cors"
     gemspec.authors = ["Calvin Yu"]
     gemspec.add_dependency 'rack'
+    gemspec.add_development_dependency 'rake'
     gemspec.files.exclude 'Gemfile'
   end
   Jeweler::GemcutterTasks.new
diff --git a/rack-cors.gemspec b/rack-cors.gemspec
index 4f7e240..c19bfeb 100644
--- a/rack-cors.gemspec
+++ b/rack-cors.gemspec
@@ -36,13 +36,16 @@ Gem::Specification.new do |s|
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_runtime_dependency(%q<rack-cors>, [">= 0"])
       s.add_runtime_dependency(%q<rack>, [">= 0"])
+      s.add_development_dependency(%q<rake>, [">= 0"])
     else
       s.add_dependency(%q<rack-cors>, [">= 0"])
       s.add_dependency(%q<rack>, [">= 0"])
+      s.add_dependency(%q<rake>, [">= 0"])
     end
   else
     s.add_dependency(%q<rack-cors>, [">= 0"])
     s.add_dependency(%q<rack>, [">= 0"])
+    s.add_dependency(%q<rake>, [">= 0"])
   end
 end