diff --git a/pkgs/development/python-modules/basemap-data/default.nix b/pkgs/development/python-modules/basemap-data/default.nix
index 5c8a754d8241..2a736ab2c2d9 100644
--- a/pkgs/development/python-modules/basemap-data/default.nix
+++ b/pkgs/development/python-modules/basemap-data/default.nix
@@ -1,14 +1,17 @@
 {
   lib,
   buildPythonPackage,
+  setuptools,
   basemap,
 }:
 
 buildPythonPackage rec {
   pname = "basemap-data";
-  format = "setuptools";
+  pyproject = true;
   inherit (basemap) version src;
 
+  build-system = [ setuptools ];
+
   sourceRoot = "${src.name}/data/basemap_data";
 
   # no tests