diff --git a/pkgs/development/python-modules/pyotgw/default.nix b/pkgs/development/python-modules/pyotgw/default.nix
index 5debbfdbc3db..876644f8719b 100644
--- a/pkgs/development/python-modules/pyotgw/default.nix
+++ b/pkgs/development/python-modules/pyotgw/default.nix
@@ -8,7 +8,7 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "pyotgw";
   version = "2.2.3";
   pyproject = true;
@@ -16,7 +16,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "mvn23";
     repo = "pyotgw";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-0F+UBIPk+A9z0YJtLVlJAqzMre8GZAio720SCi2dorE=";
   };
 
@@ -39,8 +39,8 @@ buildPythonPackage rec {
   meta = {
     description = "Python module to interact the OpenTherm Gateway";
     homepage = "https://github.com/mvn23/pyotgw";
-    changelog = "https://github.com/mvn23/pyotgw/blob/${version}/CHANGELOG.md";
-    license = with lib.licenses; [ gpl3Plus ];
+    changelog = "https://github.com/mvn23/pyotgw/blob/${finalAttrs.src.tag}/CHANGELOG.md";
+    license = lib.licenses.gpl3Plus;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})