diff --git a/requirements.txt b/requirements.txt
index e33dc92..0ede11e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -170,7 +170,7 @@ pytest-remotedata==0.3.2
 python-dateutil==2.8.0
 pytz==2019.3
 PyWavelets==1.0.3
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.0
 QtAwesome==0.6.0
 qtconsole==4.5.5