diff --git a/requirements.txt b/requirements.txt
index a199fa4..74fa825 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ numpy==1.18.1
 sphinx_rtd_theme==0.4.3
 pandas==1.0.1
 scikit_learn==0.23.1
-PyYAML==5.3.1
+PyYAML==5.4