diff --git a/requirements.txt b/requirements.txt
index 8c01cd2..9343683 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ Pillow==6.2.1
 protobuf==3.10.0
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 scipy==1.3.2
 six==1.13.0
 tensorboard==1.14.0