diff --git a/pkgs/development/python-modules/botocore-stubs/default.nix b/pkgs/development/python-modules/botocore-stubs/default.nix
index 99ac911fa615..0eb05bbae616 100644
--- a/pkgs/development/python-modules/botocore-stubs/default.nix
+++ b/pkgs/development/python-modules/botocore-stubs/default.nix
@@ -10,7 +10,7 @@
 buildPythonPackage rec {
   pname = "botocore-stubs";
   version = "1.34.65";
-  format = "pyproject";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";