diff --git a/requirements.txt b/requirements.txt
index 39562f9..03d892a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ pyparsing==2.4.7
 python-dateutil==2.8.1
 pytz==2020.1
 PyWavelets==1.1.1
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.23.0
 scikit-image==0.15.0
 scikit-learn==0.22.2.post1