diff --git a/requirements.txt b/requirements.txt
index 5beb77d..1b15df5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.2
 PyWavelets==0.5.2
-PyYAML==3.12
+PyYAML==5.4
 pyzmq==16.0.4
 qtconsole==4.3.1
 requests==2.18.4