diff --git a/free-programming-books.md b/free-programming-books.md
index 8c3ece1b3960036ea2b1d7f213fbe1f055e95cfb..5c7003ab37904ff472995c6179d968911f4befca 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -531,6 +531,7 @@
 * [Intrusion Detection Systems with Snort](http://ptgmedia.pearsoncmg.com/images/0131407333/downloads/0131407333.pdf)
 * [OWASP Top 10 for .NET Developers](http://www.troyhunt.com/2011/12/free-ebook-owasp-top-10-for-net.html)
 * [Security Engineering](http://www.cl.cam.ac.uk/~rja14/book.html)
+* [CryptoParty Handbook](https://www.cryptoparty.in/documentation/handbook)
 
 
 #### Software Architecture