diff --git a/requirements.txt b/requirements.txt
index b1259a4..9056db8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ patsy==0.4.1
 pyparsing==2.1.9
 python-dateutil==2.5.3
 pytz==2016.7
-PyYAML==3.12
+PyYAML==5.4
 scikit-learn==0.18
 scipy==0.18.1
 six==1.10.0