diff --git a/pyproject.toml b/pyproject.toml
index 41a5878..64b00da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ development = "python function/main.py --insecure --debug"
 type = "virtual"
 detached = true
 path = ".venv-lint"
-dependencies = ["ruff==0.4.2"]
+dependencies = ["ruff==0.4.9"]
 
 [tool.hatch.envs.lint.scripts]
 check = "ruff check function tests && ruff format --diff function tests"