diff --git a/pyproject.toml b/pyproject.toml
index 86d3522..66607d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
 ]
 dependencies = [
   "PyYAML>=6,<7",
-  "ruamel.yaml>=0.18,<0.19",
+  "ruamel.yaml>=0.19.1,<0.20",
   "jsonschema>=4.23,<5",
 ]