diff --git a/requirements_q1physrl.txt b/requirements_q1physrl.txt
index bf2bbc5..c648d20 100644
--- a/requirements_q1physrl.txt
+++ b/requirements_q1physrl.txt
@@ -45,7 +45,7 @@ pyglet==1.5.0
 pyrsistent==0.16.0
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.3.1
+PyYAML==5.4
 ray==0.8.4
 redis==3.4.1
 requests==2.23.0