diff --git a/share/ruby-build/jruby-1.7.21 b/share/ruby-build/jruby-1.7.21
new file mode 100644
index 00000000..21844ee7
--- /dev/null
+++ b/share/ruby-build/jruby-1.7.21
@@ -0,0 +1 @@
+install_package "jruby-1.7.21" "https://s3.amazonaws.com/jruby.org/downloads/1.7.21/jruby-bin-1.7.21.tar.gz#9fe56ea173af451ef262faaee6fb90464002584dbacc2523147f809e9d3a1c8b" jruby