diff --git a/requirements.txt b/requirements.txt
index be742dc..c66bff7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ pyparsing==2.4.1
 python-dateutil==2.8.1
 pytz==2020.1
 PyWavelets==1.1.1
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.24.0
 scikit-image==0.17.2
 scipy==1.5.2