diff --git a/requirements.txt b/requirements.txt
index 15cc375..a039c08 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ prompt-toolkit==3.0.8
 ptyprocess==0.6.0
 Pygments==2.7.2
 python-dateutil==2.8.1
-PyYAML==5.3.1
+PyYAML==5.4.0
 requests==2.24.0
 six==1.15.0
 traitlets==5.0.5