diff --git a/requirements.txt b/requirements.txt
index de96149..0b05d08 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -93,7 +93,7 @@ PySocks==1.7.1
 python-dateutil==2.8.1
 pytz==2019.3
 PyWavelets==1.1.1
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.0
 qtconsole==4.5.5
 requests==2.22.0