diff --git a/pkgs/development/python-modules/xmlschema/default.nix b/pkgs/development/python-modules/xmlschema/default.nix
index f03f00068600..61bdd691368f 100644
--- a/pkgs/development/python-modules/xmlschema/default.nix
+++ b/pkgs/development/python-modules/xmlschema/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "xmlschema";
-  version = "3.3.0";
+  version = "3.3.1";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "sissaschool";
     repo = "xmlschema";
     rev = "refs/tags/v${version}";
-    hash = "sha256-kqaS6h0bJvJQoVa4L2qhkvuZsK4a6vtqek/wWN22R6I=";
+    hash = "sha256-Sy70OQvKx0H8vxRFTEkg+QV9eVij5C9dlAwJ2HTFOi8=";
   };
 
   build-system = [ setuptools ];