diff --git a/requirements.txt b/requirements.txt
index 8ed4d07..00ee08f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ pyOpenSSL==19.0.0
 pyparsing==2.3.1
 python-dateutil==2.6.1
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.1
 requests==2.21.0
 s3transfer==0.2.0
 six==1.12.0