diff --git a/requirements.txt b/requirements.txt
index f334ef9..73533b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ protobuf==3.11.3
 pyrsistent==0.16.0
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.23.0
 scikit-learn==0.22.2.post1
 scipy==1.4.1