diff --git a/requirements.txt b/requirements.txt
index 9f0034a..2d6ec27 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,6 @@ jinja2==2.10
 jsonschema
 netaddr
 openpyxl==2.5.4
-pyyaml==3.12
+pyyaml==5.4
 requests
 six