diff --git a/pkgs/development/python-modules/confuse/default.nix b/pkgs/development/python-modules/confuse/default.nix
index 1d2f56a85f1..a3a979f68f8 100644
--- a/pkgs/development/python-modules/confuse/default.nix
+++ b/pkgs/development/python-modules/confuse/default.nix
@@ -10,7 +10,7 @@
 buildPythonPackage rec {
   pname = "confuse";
   version = "1.7.0";
-  format = "flit";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";