diff --git a/requirements.txt b/requirements.txt
index 1467310..3cc8215 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ py==1.5.2
 pyboto3==1.4.4
 pytest==3.4.0
 python-dateutil==2.6.1
-PyYAML==3.12
+PyYAML==5.4
 s3transfer==0.1.12
 six==1.11.0
 pylexo==0.4.0