diff --git a/src/requirements.txt b/src/requirements.txt
index 0032187..06701d9 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -22,7 +22,7 @@ protobuf==3.11.2
 pyparsing==2.4.5
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 scikit-learn==0.22
 scipy==1.4.1
 six==1.13.0