diff --git a/requirements.txt b/requirements.txt
index 5a8fe4c..923f409 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ pytest==5.1.2
 pytest-pylint==0.14.1
 python-dateutil==2.8.0
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.0
 scipy==1.3.1
 seaborn==0.9.0