diff --git a/requirements-dev.txt b/requirements-dev.txt
index a5a86e7..3e2eb2e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -32,7 +32,7 @@ pytest-flakes==2.0.0
 pytest-pep8==1.0.6
 python-dateutil==2.5.3
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 requests==2.16.4
 s3transfer==0.1.4
 six==1.10.0