diff --git a/requirements.txt b/requirements.txt
index c14c64e..2a493e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ pyparsing==2.4.5
 pyrsistent==0.15.5
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.1
 qtconsole==4.5.5
 rsa==4.0