diff --git a/pkgs/development/python-modules/pypugjs/default.nix b/pkgs/development/python-modules/pypugjs/default.nix
index 316c2ea55a7b..46a40dfe6673 100644
--- a/pkgs/development/python-modules/pypugjs/default.nix
+++ b/pkgs/development/python-modules/pypugjs/default.nix
@@ -6,6 +6,7 @@
   fetchFromGitHub,
   jinja2,
   mako,
+  poetry-core,
   pyramid,
   pyramid-mako,
   pytestCheckHook,
@@ -16,7 +17,7 @@
 buildPythonPackage rec {
   pname = "pypugjs";
   version = "5.12.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "kakulukia";
@@ -25,11 +26,19 @@ buildPythonPackage rec {
     hash = "sha256-JHZzyEilCjpZFIrl5kk1oJ4C/vgQTfVoRRGBK+DuHAE=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [
+    poetry-core
+  ];
+
+  dependencies = [
     six
     charset-normalizer
   ];
 
+  pythonRelaxDeps = [
+    "charset-normalizer"
+  ];
+
   nativeCheckInputs = [
     django
     jinja2
@@ -42,6 +51,10 @@ buildPythonPackage rec {
 
   pytestCheckFlags = [ "pypugjs/testsuite" ];
 
+  pythonImportsCheck = [
+    "pypugjs"
+  ];
+
   meta = with lib; {
     description = "PugJS syntax template adapter for Django, Jinja2, Mako and Tornado templates";
     mainProgram = "pypugjs";