diff --git a/pkgs/development/python-modules/xmlsec/default.nix b/pkgs/development/python-modules/xmlsec/default.nix
index b8c60f1b6425..77b1abef2fc9 100644
--- a/pkgs/development/python-modules/xmlsec/default.nix
+++ b/pkgs/development/python-modules/xmlsec/default.nix
@@ -16,11 +16,11 @@
 
 buildPythonPackage rec {
   pname = "xmlsec";
-  version = "1.3.11";
+  version = "1.3.12";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-zS6q/38xeEoH3ZnOgfp2cxPfO6GDT6pBQ+4sBwAMrHo=";
+    sha256 = "2c86ac6ce570c9e04f04da0cd5e7d3db346e4b5b1d006311606368f17c756ef9";
   };
 
   # https://github.com/mehcode/python-xmlsec/issues/84#issuecomment-632930116