diff --git a/requirements.txt b/requirements.txt
index 3673cf9..e7e959e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ protobuf==3.9.0
 pyparsing==2.4.2
 python-dateutil==2.8.0
 PyWavelets==1.0.3
-PyYAML==5.1.2
+PyYAML==5.4
 scikit-image==0.15.0
 scikit-learn==0.21.3
 scipy==1.3.0