diff --git a/requirements.txt b/requirements.txt
index a2eadcb..a4a2605 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 jinja2 == 3.0.3
 jsonschema >= 3.2.0, < 4.0
-pyyaml >= 6.0.1, < 7.0
+pyyaml >= 5.4.1, < 7.0