diff --git a/model/requirements.txt b/model/requirements.txt
index 9b4ba28..42f7388 100644
--- a/model/requirements.txt
+++ b/model/requirements.txt
@@ -20,7 +20,7 @@ protobuf==3.6.1
 pyparsing==2.3.1
 python-dateutil==2.8.0
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.4
 scikit-learn==0.20.2
 scipy==1.2.1
 six==1.12.0