diff --git a/requirements.txt b/requirements.txt
index 92ff323..053d98b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ protobuf==3.9.0
 pyparsing==2.4.0
 python-dateutil==2.8.0
 PyWavelets==1.0.3
-PyYAML==5.1.1
+PyYAML==5.4
 scikit-image==0.15.0
 scipy==1.3.0
 six==1.12.0