diff --git a/pyproject.toml b/pyproject.toml
old mode 100755
new mode 100644
index 4015560..e9245a1
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ test = [
     # have already passed, so CI goes red on a green test run. The ceiling is
     # the dependency's problem, not ours; drop it if coverage-badge is ever
     # replaced.
-    "setuptools<81",
+    "setuptools<84",
 ]
 sec = [
     "pip-audit>=2.7.3",