diff --git a/requirements.txt b/requirements.txt
index c495cde..85f0486 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 numpy==1.16.0
 torch==0.4.1
 gym==0.15.3
-PyYAML==5.3
+PyYAML==5.4
 tensorboardX==2.0
 sacred==0.7.4