diff --git a/src/requirements.txt b/src/requirements.txt
index a070a3b..26ffa62 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -28,7 +28,7 @@ ppaquette-gym-doom==0.0.3
 protobuf==3.1.0
 pyglet==1.2.4
 PyOpenGL==3.1.0
-PyYAML==3.12
+PyYAML==5.4
 requests>=2.20.0
 scipy==0.19.1
 six==1.10.0