diff --git a/srv/python/ml/requirements.txt b/srv/python/ml/requirements.txt
index 0f1aa28..01c2164 100644
--- a/srv/python/ml/requirements.txt
+++ b/srv/python/ml/requirements.txt
@@ -4,7 +4,7 @@ pandas==1.1.2
 pyaml==20.4.0
 python-dateutil==2.8.1
 pytz==2020.1
-PyYAML==5.3.1
+PyYAML==5.4
 scikit-learn==0.23.2
 scikit-optimize==0.8.1
 scipy==1.5.2