diff --git a/share/ruby-build/rbx-2.0.0-dev b/share/ruby-build/rbx-2.0.0-dev
index 6b3b07ac..d4c3d276 100644
--- a/share/ruby-build/rbx-2.0.0-dev
+++ b/share/ruby-build/rbx-2.0.0-dev
@@ -1 +1,2 @@
+install_package "yaml-0.1.4" "http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz#36c852831d02cf90508c29852361d01b"
 install_git "rubinius-2.0.0-dev" "https://github.com/rubinius/rubinius.git" "master" rbx