diff --git a/requirements.txt b/requirements.txt
index 0b2f732..d7c5fd2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,5 +9,5 @@ pybullet==1.7.4
 torch==0.4.0
 pandas==0.20.3
 scipy==1.0.0
-pyyaml==5.1
+pyyaml==5.4