diff --git a/requirements.txt b/requirements.txt
index 1959f48..e15b77a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -106,7 +106,7 @@ python-dateutil==2.8.1
 pytz==2019.3
 pywin32==227
 pywinpty==0.5.7
-PyYAML==5.2
+PyYAML==5.4
 pyzmq==18.1.1
 qtconsole==4.6.0
 requests==2.22.0