diff --git a/mis_builder_demo/pyproject.toml b/mis_builder_demo/pyproject.toml
deleted file mode 100644
index 4231d0ccc..000000000
--- a/mis_builder_demo/pyproject.toml
+++ /dev/null
@@ -1,3 +0,0 @@
-[build-system]
-requires = ["whool"]
-build-backend = "whool.buildapi"