diff --git a/free-programming-books.md b/free-programming-books.md
index f9b1448b23a1233f2f9f434377a8e6de2043a9f4..555cd6bac71b944bf3b4e0b4c1a67a0da0d93b2d 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -96,6 +96,7 @@
 * [Sage](#sage)
 * [Scala](#scala)
 * [Scheme](#scheme)
+* [Scilab](#scilab)
 * [Scratch](#scratch)
 * [Sed](#sed)
 * [Smalltalk](#smalltalk)
@@ -944,6 +945,9 @@ See also [TeX](#tex)
 * [Simply Scheme: Introducing Computer Science](http://www.cs.berkeley.edu/~bh/ss-toc2.html)
 * [Teach Yourself Scheme in Fixnum Days](http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html)
 
+###Scilab
+
+* [Introduction to Scilab](http://forge.scilab.org/index.php/p/docintrotoscilab/downloads/)
 
 ###Scratch
 * [Computer Science Concepts in Scratch](http://stwww.weizmann.ac.il/g-cs/scratch/scratch_en.html)