diff --git a/requirements.txt b/requirements.txt
index c7af86a..aafcdfb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -166,7 +166,7 @@ python-dateutil==2.8.0
 pytorch-pretrained-bert==0.6.2
 pytz==2017.3
 PyWavelets==0.5.2
-PyYAML==5.1
+PyYAML==5.4
 pyzmq==18.0.1
 QtAwesome==0.4.4
 qtconsole==4.4.4