diff --git a/pyproject.toml b/pyproject.toml
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,9 @@
 [tool.ruff]
 line-length = 99
+
+blah = 100
 # See https://beta.ruff.rs/docs/rules/ for a full list of rules.
 select = [
   "E", "W",    # pycodestyle
   "F",         # pyflakes
   "I",         # isort