diff --git a/requirements.txt b/requirements.txt
index 0ddd527..29870c4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 jinja2>=2.11.3
 Pint==0.11
 requests==2.22.0
-pyyaml==5.1.2
+pyyaml>=5.4
 ldap3==2.9