diff --git a/requirements.txt b/requirements.txt
index 514775a..430b6f6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ awsclpy==0.3.5
 Fabric==1.10.2
 Jinja2==2.7.3
 ostruct==1.0
-PyYAML==3.11
+PyYAML==5.4