diff --git a/pkgs/development/python-modules/mscerts/default.nix b/pkgs/development/python-modules/mscerts/default.nix
index b14dc7722bdd..23f9f4b0c09a 100644
--- a/pkgs/development/python-modules/mscerts/default.nix
+++ b/pkgs/development/python-modules/mscerts/default.nix
@@ -5,7 +5,7 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "mscerts";
   version = "2026.4.30";
   pyproject = true;
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "ralphje";
     repo = "mscerts";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-S6YQt0PaY9OpFFrTcnHrak+8/x105Af7xLW5jln8GK0=";
   };
 
@@ -29,7 +29,7 @@ buildPythonPackage rec {
   meta = {
     description = "Makes the Microsoft Trusted Root Program's Certificate Trust Lists available in Python";
     homepage = "https://github.com/ralphje/mscerts";
-    license = with lib.licenses; [ mpl20 ];
+    license = lib.licenses.mpl20;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})