diff --git a/requirements.txt b/requirements.txt
index f739f8e..ee23c52 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -154,7 +154,7 @@ pytorch-pretrained-bert==0.6.2
 pytorch-transformers==1.1.0
 pytz==2019.3
 PyWavelets==1.1.1
-PyYAML==5.3
+PyYAML==5.4
 pyzmq==18.1.1
 qtconsole==4.7.1
 QtPy==1.9.0