diff --git a/rscons.gemspec b/rscons.gemspec
index 0cdda6e..3f2b3fd 100644
--- a/rscons.gemspec
+++ b/rscons.gemspec
@@ -20,9 +20,6 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency "json", "~> 1.0"
 
-  gem.add_development_dependency "rspec-core"
-  gem.add_development_dependency "rspec-mocks"
-  gem.add_development_dependency "rspec-expectations"
   gem.add_development_dependency "rspec"
   gem.add_development_dependency "rake"
   gem.add_development_dependency "simplecov"