diff --git a/requirements.txt b/requirements.txt
index 5ef446a..ffa239f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -59,7 +59,7 @@ python-keystoneclient==3.15.0
 python-neutronclient==6.7.0
 python-novaclient==9.1.1
 pytz==2017.3
-PyYAML==3.12
+PyYAML==5.4
 regex==2018.1.10
 requests==2.18.4
 requests-toolbelt==0.8.0