diff --git a/pkgs/development/python-modules/update-copyright/default.nix b/pkgs/development/python-modules/update-copyright/default.nix
index 65590975f188..32e0d88aa1eb 100644
--- a/pkgs/development/python-modules/update-copyright/default.nix
+++ b/pkgs/development/python-modules/update-copyright/default.nix
@@ -2,28 +2,35 @@
   lib,
   buildPythonPackage,
   fetchPypi,
-  isPy3k,
+  setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "update-copyright";
   version = "0.6.2";
-  format = "setuptools";
+  pyproject = true;
 
-  disabled = !isPy3k;
+  __structuredAttrs = true;
+
+  src = fetchPypi {
+    inherit (finalAttrs) version;
+    pname = "update-copyright";
+    hash = "sha256-/8y263Yq/L1+kdDhkBo69/ug2Q7eTaIaxF4Y1tZry58=";
+  };
+
+  build-system = [
+    setuptools
+  ];
+
+  pythonImportsCheck = [ "update_copyright" ];
 
   # Has no tests
   doCheck = false;
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "17ybdgbdc62yqhda4kfy1vcs1yzp78d91qfhj5zbvz1afvmvdk7z";
-  };
-
   meta = {
     description = "Automatic copyright update tool";
     mainProgram = "update-copyright.py";
     homepage = "http://blog.tremily.us/posts/update-copyright";
-    license = lib.licenses.gpl3;
+    license = lib.licenses.gpl3Plus;
   };
-}
+})