diff --git a/requirements.txt b/requirements.txt
index 034a7b3..4feec4d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -69,7 +69,7 @@ PySocks==1.7.1
 pytest==5.3.1
 python-dateutil==2.8.0
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.0
 ray==0.7.3
 redis==3.3.11