diff --git a/pkgs/development/python-modules/looseversion/default.nix b/pkgs/development/python-modules/looseversion/default.nix
index 19b5d10ca0e..b16fd1a572d 100644
--- a/pkgs/development/python-modules/looseversion/default.nix
+++ b/pkgs/development/python-modules/looseversion/default.nix
@@ -2,18 +2,23 @@
 , buildPythonPackage
 , fetchPypi
 , pytestCheckHook
+, hatchling
 }:
 
 buildPythonPackage rec {
   pname = "looseversion";
   version = "1.3.0";
-  format = "flit";
+  format = "pyproject";
 
   src = fetchPypi {
     inherit version pname;
     sha256 = "sha256-695l8/a7lTGoEBbG/vPrlaYRga3Ee3+UnpwOpHkRZp4=";
   };
 
+  nativeBuildInputs = [
+    hatchling
+  ];
+
   nativeCheckInputs = [
     pytestCheckHook
   ];