diff --git a/requirements.txt b/requirements.txt
index a3007dc..acac0c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ numpy==1.12.0
 protobuf==3.2.0
 pyglet==1.2.4
 PyOpenGL==3.1.0
-PyYAML==3.12
+PyYAML==5.1
 requests==2.20.0
 scipy==0.18.1
 six==1.10.0