diff --git a/free-programming-books-es.md b/free-programming-books-es.md
index 032aca257cd2889d934a5032eba86b147e81d35b..dc7e5d243a1f61d9d9046b2e988fb388da9f2cb8 100644
--- a/free-programming-books-es.md
+++ b/free-programming-books-es.md
@@ -18,6 +18,7 @@
 
 * [¡Quiero Aprender Python! - Python Argentina](http://python.org.ar/AprendiendoPython)
 * [CodeHero](http://codehero.co/)
+* [OPENLIBRA La Biblioteca Libre online que estabas esperando](http://www.etnassoft.com/biblioteca/)
 
 ###Ensamblador