diff --git a/requirements.txt b/requirements.txt
index 1c70f88..87042c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 Theano==1.0.5
+Theano-PyMC==1.0.5 
 pymc3==3.9.3
 arviz==0.11.1
 scikit-learn