diff --git a/pkgs/development/python-modules/cwl-utils/default.nix b/pkgs/development/python-modules/cwl-utils/default.nix
index 37392acb299a..e91507d1815b 100644
--- a/pkgs/development/python-modules/cwl-utils/default.nix
+++ b/pkgs/development/python-modules/cwl-utils/default.nix
@@ -16,7 +16,7 @@
   schema-salad,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "cwl-utils";
   version = "0.41";
   pyproject = true;
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "common-workflow-language";
     repo = "cwl-utils";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-78Kx+LCEcPE7qsV6MFtfSY6tVj5KZhifFOib7beCU2c=";
   };
 
@@ -65,8 +65,8 @@ buildPythonPackage rec {
   meta = {
     description = "Utilities for CWL";
     homepage = "https://github.com/common-workflow-language/cwl-utils";
-    changelog = "https://github.com/common-workflow-language/cwl-utils/releases/tag/v${version}";
+    changelog = "https://github.com/common-workflow-language/cwl-utils/releases/tag/v${finalAttrs.src.tag}";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})