diff --git a/requirements/base.txt b/requirements/base.txt
index 3560b13..4015014 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -15,7 +15,7 @@ jsonschema==2.6.0
 MarkupSafe==1.0
 pycparser==2.18
 pycrypto==2.6.1
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.1
 six==1.10.0
 SQLAlchemy==1.1.11