diff --git a/requirements.txt b/requirements.txt
index 8ada52d..9c3ccf8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ protobuf==3.6.1
 pyparsing==2.2.2
 python-dateutil==2.7.3
 pytz==2018.5
-PyYAML==3.13
+PyYAML==5.4
 scipy==1.1.0
 six==1.11.0
 tensorboard==1.11.0