diff --git a/share/ruby-build/1.9.4-dev b/share/ruby-build/1.9.4-dev
new file mode 100644
index 00000000..5db6e89a
--- /dev/null
+++ b/share/ruby-build/1.9.4-dev
@@ -0,0 +1,4 @@
+use_gcc42_on_lion
+install_package "yaml-0.1.4" "http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz"
+install_git "ruby-1.9.4-dev" "https://github.com/ruby/ruby.git" "trunk" autoconf standard
+install_package "rubygems-1.8.10" "http://production.cf.rubygems.org/rubygems/rubygems-1.8.10.tgz" ruby