diff --git a/pkgs/development/python-modules/ssdeep/default.nix b/pkgs/development/python-modules/ssdeep/default.nix
index 8c56f06ceeed..6890c339e553 100644
--- a/pkgs/development/python-modules/ssdeep/default.nix
+++ b/pkgs/development/python-modules/ssdeep/default.nix
@@ -4,25 +4,30 @@
   cffi,
   fetchFromGitHub,
   pytestCheckHook,
+  setuptools,
   six,
   ssdeep,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "ssdeep";
   version = "3.4.1";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "DinoTools";
     repo = "python-ssdeep";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-I5ci5BS+B3OE0xdLSahu3HCh99jjhnRHJFz830SvFpg=";
   };
 
   buildInputs = [ ssdeep ];
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     cffi
     six
   ];
@@ -39,8 +44,8 @@ buildPythonPackage rec {
   meta = {
     description = "Python wrapper for the ssdeep library";
     homepage = "https://github.com/DinoTools/python-ssdeep";
-    changelog = "https://github.com/DinoTools/python-ssdeep/blob/${version}/CHANGELOG.rst";
+    changelog = "https://github.com/DinoTools/python-ssdeep/blob/${finalAttrs.version}/CHANGELOG.rst";
     license = lib.licenses.lgpl3Plus;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})