diff --git a/pyproject.toml b/pyproject.toml
index be0e074..5431f27 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,4 +19,4 @@ package-dir = {"" = "src"}
 where = ["src"]
 
 [tool.ruff]
-target-version = "0.4.9"
+target-version = "py311"