--- pyproject.toml.orig	1970-01-01 00:00:00 UTC
+++ pyproject.toml
@@ -1,8 +1,8 @@
 [build-system]
 # These requirements must be kept sync with the requirements in
 # ./.github/requirements/build-requirements.{in,txt}
-requires = ["uv_build>=0.7.19,<0.12.0"]
-build-backend = "uv_build"
+requires = ["flit_core>=3.12,<4"]
+build-backend = "flit_core.buildapi"
 
 [project]
 name = "cryptography_vectors"