diff --git a/pkgs/development/python-modules/case-converter/default.nix b/pkgs/development/python-modules/case-converter/default.nix
index b3795d39494c..77f738eaacbf 100644
--- a/pkgs/development/python-modules/case-converter/default.nix
+++ b/pkgs/development/python-modules/case-converter/default.nix
@@ -6,7 +6,7 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "case-converter";
   version = "1.2.0";
   pyproject = true;
@@ -14,7 +14,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "chrisdoherty4";
     repo = "python-case-converter";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-PS/9Ndl3oD9zimEf819dNoSAeNJPndVjT+dkfW7FIJs=";
   };
 
@@ -29,8 +29,8 @@ buildPythonPackage rec {
   meta = {
     description = "Case conversion library for Python";
     homepage = "https://github.com/chrisdoherty4/python-case-converter";
-    changelog = "https://github.com/chrisdoherty4/python-case-converter/releases/tag/${src.tag}";
+    changelog = "https://github.com/chrisdoherty4/python-case-converter/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ sigmanificient ];
   };
-}
+})