diff --git a/pkgs/development/python-modules/dlms-cosem/default.nix b/pkgs/development/python-modules/dlms-cosem/default.nix
index cfe444813ade..8a27238765a2 100644
--- a/pkgs/development/python-modules/dlms-cosem/default.nix
+++ b/pkgs/development/python-modules/dlms-cosem/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "dlms-cosem";
-  version = "24.1.0";
+  version = "25.1.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     owner = "pwitab";
     repo = "dlms-cosem";
     tag = version;
-    hash = "sha256-NeTaU8i18Zb39Y2JnYzr87Ozt7Rj074xusL4xaNe0q0=";
+    hash = "sha256-ZsF+GUVG9bZNZE5daROQJIZZgqpjAkB/bFyre2oGu+E=";
   };
 
   nativeBuildInputs = [ setuptools ];