diff --git a/pkgs/development/python-modules/xml2rfc/default.nix b/pkgs/development/python-modules/xml2rfc/default.nix
index 91933c5f95ec..e86b1b206094 100644
--- a/pkgs/development/python-modules/xml2rfc/default.nix
+++ b/pkgs/development/python-modules/xml2rfc/default.nix
@@ -4,11 +4,11 @@
 
 buildPythonPackage rec {
   pname = "xml2rfc";
-  version = "2.12.3";
+  version = "2.18.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "64609a2194d18c03e2348f1ea2fb97208b3455dfb76a16900143813aa61b6d3c";
+    sha256 = "e192236798615f34479a9bb9f30df72ce0e5f319df75ecc0473d896713a17451";
   };
 
   propagatedBuildInputs = [