diff --git a/pyproject.toml b/pyproject.toml
index 2d60a987..6d38a167 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ setuptools = ">=80.9.0"
 rich = "^14.0.0"
 
 [tool.poetry.group.dev.dependencies]
-ruff = "^0.12.10"
+ruff = ">=0.12.10,<0.14.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]