diff --git a/pkgs/development/python-modules/rcssmin/default.nix b/pkgs/development/python-modules/rcssmin/default.nix
index 17db349ccc67..11c5a1bb651f 100644
--- a/pkgs/development/python-modules/rcssmin/default.nix
+++ b/pkgs/development/python-modules/rcssmin/default.nix
@@ -7,14 +7,14 @@
 
 buildPythonPackage rec {
   pname = "rcssmin";
-  version = "1.2.0";
+  version = "1.2.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-9DaHJBLPpvBP/5kMYyIkaxOqOJ9gMjuWNYPtYQLXyEw=";
+    hash = "sha256-s1wMic2sj8NWwrCYXz5TToXMGNGXHZAtHqx/5rT/Vmw=";
   };
 
   # The package does not ship tests, and the setup machinery confuses