diff --git a/requirements.txt b/requirements.txt
index 886ed32..50254ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ pyglet==1.3.2
 pyparsing==2.3.1
 python-dateutil==2.7.5
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.4
 requests==2.21.0
 scipy==1.2.0
 six==1.12.0