diff --git a/free-programming-books.md b/free-programming-books.md
index d657800d0..8395458a5 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -572,6 +572,7 @@
 ###Ruby on Rails
 
 * [Ruby on Rails Tutorial: Learn Rails By Example](http://ruby.railstutorial.org/ruby-on-rails-tutorial-book)
+* [Objects on Rails](http://objectsonrails.com)
 
 
 ###Rust