diff --git a/requirements.txt b/requirements.txt
index dd4d4cd..50c10a6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -66,7 +66,7 @@ pyrsistent==0.15.1
 python-dateutil==2.7.5
 pytz==2019.1
 PyWavelets==1.0.3
-PyYAML==3.13
+PyYAML==5.4
 pyzmq==18.0.1
 qtconsole==4.4.4
 s3transfer==0.2.1