diff --git a/libv8.gemspec b/libv8.gemspec
index a267072..fbe5877 100644
--- a/libv8.gemspec
+++ b/libv8.gemspec
@@ -26,6 +26,6 @@ Gem::Specification.new do |s|
   s.extensions = ["ext/libv8/extconf.rb"]
   s.require_paths = ["lib"]
   
-  s.add_development_dependency "rake"
+  s.add_development_dependency "rake", "~> 0.8.7"
   s.add_development_dependency "bundler"
 end