diff --git a/requirements.txt b/requirements.txt
index 02412ff..d7675cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -191,7 +191,7 @@ python-dateutil==2.6.0
 python-utils==2.0.1
 pytz==2017.2
 PyWavelets==0.5.2
-PyYAML==5.1
+PyYAML==5.4
 pyzmq==17.0.0
 qtconsole==4.2.1
 queuelib==1.4.2