diff --git a/site-cookbooks/backup/recipes/default.rb b/site-cookbooks/backup/recipes/default.rb
index d62b6cb..4123e4d 100644
--- a/site-cookbooks/backup/recipes/default.rb
+++ b/site-cookbooks/backup/recipes/default.rb
@@ -25,7 +25,7 @@
 
 build_essential 'backup gem'
 
-package ["ruby"]
+package ["ruby", "ruby-dev"]
 
 gem_package 'backup' do
   version '5.0.0.beta.2'