diff --git a/requirements.txt b/requirements.txt
index 4e9d6ca..5e40fb2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ MarkupSafe==1.0
 placebo==0.8.2
 python-dateutil==2.6.1
 python-slugify==1.2.4
-PyYAML==5.1
+PyYAML==5.4
 requests==2.20.0
 s3transfer==0.1.13
 six==1.11.0