diff --git a/requirements.txt b/requirements.txt
index 3e373d1..d3760d7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.3
 PyWavelets==0.5.2
-PyYAML==3.12
+PyYAML==5.4
 pyzmq==16.0.3
 qtconsole==4.3.1
 requests==2.18.4