diff --git a/requirements.txt b/requirements.txt
index 7b5f838..158613a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ botocore==1.5.62
 click==6.6
 docutils==0.12
 jmespath==0.9.0
-pyaml==15.8.2
+pyaml==19.12.0
 python-dateutil==2.5.3
 PyYAML==5.1
 six==1.10.0