diff --git a/pyproject.toml b/pyproject.toml
index d83bd2c..993bf15 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ readme = "README.md"
 [tool.poetry.dependencies]
 python = "^3.9"
 regex = ">=2021.4,<2025.0"
-"ruamel.yaml" = {version = ">=0.16.5,<0.19.0", optional = true}
+"ruamel.yaml" = {version = ">=0.16.5,<0.20.0", optional = true}
 numpy = ">=1.19,<3.0"
 click = "^8.0"
 rich = ">=10.7,<15.0"