diff --git a/pkgs/development/python-modules/intbitset/default.nix b/pkgs/development/python-modules/intbitset/default.nix
index c4b7e3ab708a..41c0220016af 100644
--- a/pkgs/development/python-modules/intbitset/default.nix
+++ b/pkgs/development/python-modules/intbitset/default.nix
@@ -7,7 +7,7 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "intbitset";
   version = "4.1.0";
   pyproject = true;
@@ -15,7 +15,7 @@ buildPythonPackage rec {
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-cxRf8F5CJ8dlhf+FUGOLagg80TABC3gQRdga9Y97aSA=";
   };
 
@@ -27,8 +27,8 @@ buildPythonPackage rec {
   meta = {
     description = "C-based extension implementing fast integer bit sets";
     homepage = "https://github.com/inveniosoftware/intbitset";
-    changelog = "https://github.com/inveniosoftware-contrib/intbitset/blob/v${version}/CHANGELOG.rst";
+    changelog = "https://github.com/inveniosoftware-contrib/intbitset/blob/v${finalAttrs.version}/CHANGELOG.rst";
     license = lib.licenses.lgpl3Plus;
     maintainers = with lib.maintainers; [ sigmanificient ];
   };
-}
+})