diff --git a/requirements-dev.txt b/requirements-dev.txt
index 887d1f6..726cc96 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -29,7 +29,7 @@ MarkupSafe==1.0
 poyo==0.4.1
 psycopg2==2.7.4
 python-dateutil==2.7.3
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 s3transfer==0.1.13
 six==1.11.0