diff --git a/requirements.txt b/requirements.txt
index 081acd7..3065739 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ pyglet==1.3.2
 Pygments==2.3.1
 pyparsing==2.3.0
 python-dateutil==2.7.5
-PyYAML==3.13
+PyYAML==5.4
 pyzmq==17.1.2
 qtconsole==4.4.3
 requests==2.21.0