diff --git a/pkgs/development/python-modules/imantics/default.nix b/pkgs/development/python-modules/imantics/default.nix
index 88e8e4835ce4..2204450bed74 100644
--- a/pkgs/development/python-modules/imantics/default.nix
+++ b/pkgs/development/python-modules/imantics/default.nix
@@ -2,6 +2,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   lib,
+  setuptools,
   numpy,
   opencv4,
   lxml,
@@ -12,7 +13,7 @@
 buildPythonPackage rec {
   pname = "imantics";
   version = "0.1.12";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "jsbroks";
@@ -21,18 +22,17 @@ buildPythonPackage rec {
     sha256 = "1zv2gj8cbakhh2fyr2611cbqhfk37a56x973ny9n43y70n26pzm8";
   };
 
-  propagatedBuildInputs = [
+  pythonRemoveDeps = [ "opencv-python" ];
+
+  build-system = [ setuptools ];
+
+  dependencies = [
     numpy
     opencv4
     lxml
     xmljson
   ];
 
-  postPatch = ''
-    substituteInPlace setup.py \
-      --replace "'opencv-python>=3'," ""
-  '';
-
   nativeCheckInputs = [ pytestCheckHook ];
 
   pythonImportsCheck = [ "imantics" ];