diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
diff --git a/tests/test-check-code.t b/tests/test-check-code.t
--- a/tests/test-check-code.t
+++ b/tests/test-check-code.t
@@ -69,6 +69,7 @@
   hg
   hgeditor
   hgweb.cgi
+  pyproject.toml
   rustfmt.toml
   setup.py