diff --git a/requirements.txt b/requirements.txt
index d6ac020..5717a96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ psycopg2-binary==2.7.6.1
 ptyprocess==0.6.0
 Pygments==2.3.1
 pytoml==0.1.20
-PyYAML==3.13
+PyYAML==5.4
 six==1.12.0
 SQLAlchemy==1.2.15
 traitlets==4.3.2