diff --git a/pyproject.toml b/pyproject.toml
index 8cb877c351..f2d8c5cad0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -235,7 +235,6 @@ lint.ignore = [
   "B027",
   "B024",
   "NPY002",  # new numpy random syntax is worse
-  "UP038",   # (x, y) -> x|y for isinstance
 ]
 line-length = 160
 target-version ="py311"