diff --git a/requirements.txt b/requirements.txt
index 4550653..9e7f8f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ MarkupSafe==1.1.1
 peewee==3.6.4
 psycopg2-binary==2.7.7
 python-dateutil==2.8.1
-PyYAML==5.3
+PyYAML==5.4
 requests==2.22.0
 s3transfer==0.1.13
 six==1.14.0