diff --git a/requirements.txt b/requirements.txt
index fbac8ea..34c8600 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ protobuf==3.9.1
 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
 scipy==1.1.0
 six==1.12.0