diff --git a/free-programming-books-zh.md b/free-programming-books-zh.md
index 1668e1e3b8cbe37ce37feba4aae5b4b5e99e7595..1f55b5648fca2bb950187670a15b55c1bcb9b5e4 100644
--- a/free-programming-books-zh.md
+++ b/free-programming-books-zh.md
@@ -852,7 +852,6 @@ See also [TeX](#tex)
 ###Ruby
 * [The Bastards Book of Ruby](http://ruby.bastardsbook.com/)
 * [Learn Ruby the hard way](http://ruby.learncodethehardway.org/book/)
-* [MacRuby: The Definitive Guide](http://macruby.labs.oreilly.com/)
 * [Mr. Neighborly's Humble Little Ruby Book](http://www.humblelittlerubybook.com/)
 * [Programming Ruby](http://www.ruby-doc.org/docs/ProgrammingRuby/)
 * [Why's (Poignant) Guide to Ruby](http://mislav.uniqpath.com/poignant-guide/) ([mirror](http://www.scribd.com/doc/2236084/Whys-Poignant-Guide-to-Ruby))
diff --git a/free-programming-books.md b/free-programming-books.md
index d0b4b6544be3fe505d95971ef5b4b8aeb9c7d476..b61c76c4a929fe9793641d68b7dd488e59241265 100755
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -1083,7 +1083,6 @@ See also [TeX](#tex)
 ###Ruby
 * [The Bastards Book of Ruby](http://ruby.bastardsbook.com/)
 * [Learn Ruby the hard way](http://ruby.learncodethehardway.org/book/)
-* [MacRuby: The Definitive Guide](http://macruby.labs.oreilly.com/)
 * [Mr. Neighborly's Humble Little Ruby Book](http://www.humblelittlerubybook.com/)
 * [Programming Ruby](http://www.ruby-doc.org/docs/ProgrammingRuby/)
 * [Why's (Poignant) Guide to Ruby](http://mislav.uniqpath.com/poignant-guide/) ([mirror](http://www.scribd.com/doc/2236084/Whys-Poignant-Guide-to-Ruby))