diff --git a/requirements.txt b/requirements.txt
index 249cdbd..302c60f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,6 @@ jmespath==0.9.2
 packaging==16.8
 pyparsing==2.2.0
 python-dateutil==2.6.0
-PyYAML==3.12
+PyYAML==5.1
 s3transfer==0.1.10
 six==1.10.0