diff --git a/requirements.txt b/requirements.txt
index 3320922..801da09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ pyrsistent==0.17.3
 python-dateutil==2.8.1
 pytz==2020.4
 PyWavelets==1.1.1
-PyYAML==5.3.1
+PyYAML==5.4
 pyzmq==19.0.2
 qtconsole==4.7.7
 QtPy==1.9.0