diff --git a/free-programming-books-es.md b/free-programming-books-es.md
index 87a5167df71e8af685a13026fe020cdfca5cdfed..2e5c351f3d7e20b9b3e5e5367a5d6c97165e40f4 100644
--- a/free-programming-books-es.md
+++ b/free-programming-books-es.md
@@ -214,6 +214,7 @@
 ### NoSQL
 * MongoDB
     * [El pequeño libro MongoDB](https://github.com/uokesita/the-little-mongodb-book)
+    * [MongoDB en español: T1, El principio](https://github.com/yograterol/ebook-mongodb-basico) por Yohan Graterol
 
 
 ### PHP