diff --git a/requirements.txt b/requirements.txt
index 342c6c5..1c189ca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ pytest-cov==2.8.1
 python-coveralls==2.9.3
 python-dateutil==2.8.0
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 six==1.12.0
 SQLAlchemy==1.3.10