diff --git a/README.md b/README.md
index ae5e8f8..b7357de 100644
--- a/README.md
+++ b/README.md
@@ -568,6 +568,7 @@ on MNIST digits[DEEP LEARNING]
 * [Spearmint](https://github.com/JasperSnoek/spearmint) - Spearmint is a package to perform Bayesian optimization according to the algorithms outlined in the paper: Practical Bayesian Optimization of Machine Learning Algorithms. Jasper Snoek, Hugo Larochelle and Ryan P. Adams. Advances in Neural Information Processing Systems, 2012.
 * [Pebl](https://github.com/abhik/pebl/) - Python Environment for Bayesian Learning
 * [Theano](https://github.com/Theano/Theano/) - Optimizing GPU-meta-programming code generating array oriented optimizing math compiler in Python
+* [yahmm](https://github.com/jmschrei/yahmm/) - Hidden Markov Models for Python, implemented in Cython for speed and efficiency.
 
 <a name="python-data-analysis" />
 #### Data Analysis / Data Visualization