diff --git a/pyproject.toml b/pyproject.toml
index ccd9265..71054a7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [build-system]
-build-backend = "setuptools.build_meta"
-requires = ["setuptools>=40.8.0"]
+build-backend = "flit_core.buildapi"
+requires = ["flit_core >=3.2,<4"]
 
 [project]
 authors = [