diff --git a/requirements.txt b/requirements.txt
index a9a0924..fca5d24 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ pytest==5.4.1
 pytest-benchmark==3.2.3
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.3.1
+PyYAML==5.4
 scikit-learn==0.22.2.post1
 scipy==1.4.1
 six==1.14.0