diff --git a/scripts/pyproject.toml b/scripts/pyproject.toml
index 9891146cd3..c90df288eb 100644
--- a/scripts/pyproject.toml
+++ b/scripts/pyproject.toml
@@ -17,3 +17,4 @@ exclude = ["./ty_benchmark"]
 [tool.ty.rules]
 possibly-unresolved-reference = "error"
 division-by-zero = "error"
+unused-ignore-comment = "error"
diff --git a/scripts/ty_benchmark/pyproject.toml b/scripts/ty_benchmark/pyproject.toml
index b77f3d6273..5d78c23c32 100644
--- a/scripts/ty_benchmark/pyproject.toml
+++ b/scripts/ty_benchmark/pyproject.toml
@@ -34,3 +34,4 @@ ignore = [
 [tool.ty.rules]
 possibly-unresolved-reference = "error"
 division-by-zero = "error"
+unused-ignore-comment = "error"