diff --git a/README.md b/README.md
index 68c6b74..5e8636c 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,7 @@
   * [**Python**: *lisp.py: Make your own Lisp interpreter*](http://khamidou.com/compilers/lisp.py/)
   * [**Python**: *Simple Iterator-based Parsing*](http://effbot.org/zone/simple-iterator-parser.htm)
   * [**Python**: *Simple Top-Down Parsing in Python*](http://effbot.org/zone/simple-top-down-parsing.htm)
+  * [**Ruby**: *Build a grammar with parser combinators in Ruby*](https://github.com/gosukiwi/parser-combinator)
 
 * Build your own **Regex Engine**
   * [**C**: *A Regular Expression Matcher*](https://www.cs.princeton.edu/courses/archive/spr09/cos333/beautiful.html)