diff --git a/requirements.txt b/requirements.txt
index e3271ef..cdcacc2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -83,7 +83,7 @@ pytest==5.3.2
 python-dateutil==2.8.1
 python-editor==1.0.4
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 pyzmq==18.1.1
 qtconsole==4.6.0
 requests==2.22.0