diff --git a/environment/requirements.txt b/environment/requirements.txt
index 7dfa115..8d30865 100644
--- a/environment/requirements.txt
+++ b/environment/requirements.txt
@@ -123,7 +123,7 @@ pytest==4.0.1
 python-dateutil==2.7.5
 pytz==2018.7
 PyWavelets==1.0.1
-PyYAML==4.2b4
+PyYAML==5.4
 pyzmq==22.0.1
 ray==0.6.4
 redis==3.0.1