diff --git a/pkgs/development/python-modules/dlms-cosem/default.nix b/pkgs/development/python-modules/dlms-cosem/default.nix
index 43a2da0ef092..1f7e5bee54bb 100644
--- a/pkgs/development/python-modules/dlms-cosem/default.nix
+++ b/pkgs/development/python-modules/dlms-cosem/default.nix
@@ -25,6 +25,11 @@ buildPythonPackage rec {
     hash = "sha256-ZsF+GUVG9bZNZE5daROQJIZZgqpjAkB/bFyre2oGu+E=";
   };
 
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace-fail 'VERSION = "24.1.0"' 'VERSION = "${version}"'
+  '';
+
   build-system = [ setuptools ];
 
   dependencies = [