diff --git a/pkgs/development/python-modules/rcssmin/default.nix b/pkgs/development/python-modules/rcssmin/default.nix
index 34070cc2d3bd..15fc1c3bfee1 100644
--- a/pkgs/development/python-modules/rcssmin/default.nix
+++ b/pkgs/development/python-modules/rcssmin/default.nix
@@ -1,20 +1,33 @@
-{ lib, buildPythonPackage, fetchPypi }:
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+}:
+
 buildPythonPackage rec {
   pname = "rcssmin";
-  version = "1.1.1";
+  version = "1.1.2";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-T5QAtDZtKfX1RG9Y54VJr6gzjmpZdAxzEV6fasQT3GQ=";
+    hash = "sha256-vHXrdb1tNFwMUf2A/Eh93W+f1AndeGGz/pje6FAY4ek=";
   };
 
   # The package does not ship tests, and the setup machinary confuses
   # tests auto-discovery
   doCheck = false;
 
+  pythonImportsCheck = [
+    "rcssmin"
+  ];
+
   meta = with lib; {
+    description = "CSS minifier written in pure python";
     homepage = "http://opensource.perlig.de/rcssmin/";
     license = licenses.asl20;
-    description = "CSS minifier written in pure python";
+    maintainers = with maintainers; [ ];
   };
 }