diff --git a/requirements.txt b/requirements.txt
index 002655b..1d0963c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -69,7 +69,7 @@ pyparsing==2.3.0
 python-dateutil==2.7.5
 pytz==2018.7
 PyWavelets==1.0.2
-PyYAML==3.13
+PyYAML==5.4
 pyzmq==17.1.2
 qtconsole==4.4.3
 requests==2.21.0