diff --git a/pkgs/development/python-modules/xmlschema/default.nix b/pkgs/development/python-modules/xmlschema/default.nix
index d306f83220e8..a651ed624d4e 100644
--- a/pkgs/development/python-modules/xmlschema/default.nix
+++ b/pkgs/development/python-modules/xmlschema/default.nix
@@ -10,7 +10,7 @@
 
 buildPythonPackage rec {
   pname = "xmlschema";
-  version = "2.2.1";
+  version = "2.2.3";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -19,7 +19,7 @@ buildPythonPackage rec {
     owner = "sissaschool";
     repo = "xmlschema";
     rev = "refs/tags/v${version}";
-    hash = "sha256-yF2L5VxUkqJjen5JeCQis4Q1o1KCJtRJ+S52wnS5VQg=";
+    hash = "sha256-KTxVUYdflHiC96tALFcMA0JnLt0vj/nSD3ie53lMi50=";
   };
 
   propagatedBuildInputs = [