diff --git a/requirements.txt b/requirements.txt
index c4653dc..7dc8eeb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -147,7 +147,7 @@ pytest-remotedata==0.3.1
 python-dateutil==2.8.0
 pytz==2018.9
 PyWavelets==1.0.2
-PyYAML==5.1
+PyYAML==5.4
 pyzmq==18.0.0
 QtAwesome==0.5.7
 qtconsole==4.4.3