diff --git a/api/requirements.txt b/api/requirements.txt
index 3f000c2..37c4191 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -25,7 +25,7 @@ nameko==2.6.0
 path.py==10.3.1
 pbr==3.0.1
 python-dotenv==0.7.1
-PyYAML==3.12
+PyYAML==5.4
 requests==2.14.2
 six==1.10.0
 Werkzeug==0.12.2