diff --git a/requirements.txt b/requirements.txt
index 586d028..2bba83e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ MarkupSafe==1.1.1
 plumbum==1.6.7
 pyasn1==0.4.5
 python-dateutil==2.8.0
-PyYAML==5.1
+PyYAML==5.4
 rsa==3.4.2
 s3transfer==0.2.1
 six==1.12.0