diff --git a/requirements-3.6.txt b/requirements-3.6.txt
index 451e3f9..2022302 100644
--- a/requirements-3.6.txt
+++ b/requirements-3.6.txt
@@ -64,7 +64,7 @@ pytest-xdist==1.22.2
 python-dateutil==2.7.2
 python-memcached==1.59
 pytz==2018.3
-PyYAML==3.12
+PyYAML==5.4
 qrcode==6.0
 redis==2.10.6
 requests==2.18.4