diff --git a/pyproject.toml b/pyproject.toml
index 0a45271..e53542c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ test = [
 	"pytest-cov",
 	"pytest-mypy",
 	"pytest-enabler >= 2.2",
-	"pytest-ruff >= 0.2.1",
+	"pytest-ruff >= 0.2.1; sys_platform != 'cygwin'",
 
 	# local
 	"pygments",
diff --git a/ruff.toml b/ruff.toml
index 7061298..f1d03f8 100644
--- a/ruff.toml
+++ b/ruff.toml
@@ -1,6 +1,7 @@
 [lint]
 extend-select = [
 	"C901",
+	"PERF401",
 	"W",
 ]
 ignore = [
@@ -22,7 +23,5 @@ ignore = [
 ]
 
 [format]
-# Enable preview, required for quote-style = "preserve"
-preview = true
-# https://docs.astral.sh/ruff/settings/#format-quote-style
+# https://docs.astral.sh/ruff/settings/#format_quote-style
 quote-style = "preserve"