diff --git a/pkgs/development/python-modules/yacs/default.nix b/pkgs/development/python-modules/yacs/default.nix
index fc6db5333b80..83ffef5b51b4 100644
--- a/pkgs/development/python-modules/yacs/default.nix
+++ b/pkgs/development/python-modules/yacs/default.nix
@@ -2,23 +2,28 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   python,
   pyyaml,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "yacs";
   version = "0.1.8";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "rbgirshick";
     repo = "yacs";
-    rev = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-nO8FL4tTkfTthXYXxXORLieFwvn780DDxfrxC9EUUJ0=";
   };
 
-  propagatedBuildInputs = [ pyyaml ];
+  build-system = [ setuptools ];
+
+  dependencies = [ pyyaml ];
 
   pythonImportsCheck = [ "yacs" ];
   checkPhase = ''
@@ -31,4 +36,4 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = [ ];
   };
-}
+})