diff --git a/requirements.txt b/requirements.txt
index 4ba8153..ba2c6eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ pycparser==2.19
 PyNaCl==1.3.0
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 requests==2.22.0
 rsa==3.4.2
 s3transfer==0.3.2