diff --git a/pkgs/development/python-modules/pycfdns/default.nix b/pkgs/development/python-modules/pycfdns/default.nix
index 3ad4b1c12ed1..488d5fee4994 100644
--- a/pkgs/development/python-modules/pycfdns/default.nix
+++ b/pkgs/development/python-modules/pycfdns/default.nix
@@ -4,6 +4,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   poetry-core,
+  pyprojectVersionPatchHook,
 }:
 
 buildPythonPackage rec {
@@ -18,14 +19,13 @@ buildPythonPackage rec {
     hash = "sha256-bLzDakxKq8fcjEKSxc6D5VN9gfAu1M3/zaAU2UYnwSs=";
   };
 
-  postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace 'version="0",' 'version="${version}",'
-  '';
+  nativeBuildInputs = [
+    pyprojectVersionPatchHook
+  ];
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [ aiohttp ];
+  dependencies = [ aiohttp ];
 
   # Project has no tests
   doCheck = false;