diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index fe36084..6c0c476 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,9 +2,10 @@
 CHANGELOG
 *********
 
-`v4.3.0`_ (2024-02-xx)
+`v4.3.0`_ (2024-02-17)
 ======================
-* Change the scope of the dynamic schema context evaluation
+* Change the purpose of the evaluation with a dynamic schema context
+* Add a tox.ini testenv with Python 3.13 pre-releases
 
 `v4.2.1`_ (2024-02-10)
 ======================
diff --git a/elementpath/tdop.py b/elementpath/tdop.py
index 57099a1..e2113db 100644
--- a/elementpath/tdop.py
+++ b/elementpath/tdop.py
@@ -15,9 +15,9 @@
 from abc import ABCMeta
 from unicodedata import name as unicode_name
 from decimal import Decimal, DecimalException
-from typing import Any, cast, overload, no_type_check_decorator, Callable, \
-    Dict, Generic, List, Optional, Union, Tuple, Type, Pattern, Match, \
-    MutableMapping, MutableSequence, Iterator, TypeVar
+from typing import Any, cast, overload, Callable, Dict, Generic, List, \
+    Optional, Union, Tuple, Type, Pattern, Match, MutableMapping, \
+    MutableSequence, Iterator, TypeVar
 
 #
 # Simple top-down parser based on Vaughan Pratt's algorithm (Top Down Operator Precedence).
@@ -797,7 +797,6 @@ def method(cls, symbol: Union[str, Type[TK_co]], bp: int = 0) \
         """
         token_class = cls.register(symbol, label='operator', lbp=bp, rbp=bp)
 
-        @no_type_check_decorator
         def bind(func: Callable[..., Any]) -> Callable[..., Any]:
             method_name = func.__name__.partition('_')[0]
             if not callable(getattr(token_class, method_name)):
diff --git a/elementpath/xpath31/_xpath31_functions.py b/elementpath/xpath31/_xpath31_functions.py
index 1990a5d..899da7a 100644
--- a/elementpath/xpath31/_xpath31_functions.py
+++ b/elementpath/xpath31/_xpath31_functions.py
@@ -910,7 +910,7 @@ def evaluate_parse_ietf_date_function(self, context=None):
     tzname_match = re.search(tzname_regex, value, re.IGNORECASE)
     if tzname_match is not None:
         # only to let be parsed by strptime()
-        value = re.sub(tzname_regex, 'UTC', value, re.IGNORECASE)
+        value = re.sub(tzname_regex, 'UTC', value, flags=re.IGNORECASE)
 
     illegal_tzname_regex = r'\b(CET)\b'
     if re.search(illegal_tzname_regex, value, re.IGNORECASE) is not None:
diff --git a/publiccode.yml b/publiccode.yml
index 48c68db..a351087 100644
--- a/publiccode.yml
+++ b/publiccode.yml
@@ -6,8 +6,8 @@ publiccodeYmlVersion: '0.2'
 name: elementpath
 url: 'https://github.com/sissaschool/elementpath'
 landingURL: 'https://github.com/sissaschool/elementpath'
-releaseDate: '2024-02-10'
-softwareVersion: v4.2.1
+releaseDate: '2024-02-17'
+softwareVersion: v4.3.0
 developmentStatus: stable
 platforms:
   - linux
diff --git a/setup.py b/setup.py
index 780cae4..74c8a19 100644
--- a/setup.py
+++ b/setup.py
@@ -49,6 +49,7 @@
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Software Development :: Libraries',
diff --git a/tox.ini b/tox.ini
index 16bf52e..8ee7f95 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,7 @@
 [tox]
 min_version = 4.0
 envlist =
-    py{38,39,310,311,312}, pypy3, docs, flake8,
+    py{38,39,310,311,312,313}, pypy3, docs, flake8,
     mypy-py{38,39,310,311,312,py3}, pytest, coverage,
     xmlschema{223,231,240,251,301}, w3c-xsdtests
 skip_missing_interpreters = true
@@ -21,6 +21,11 @@ deps =
     coverage: coverage
 commands = python -m unittest
 
+[testenv:py313]
+deps =
+    xmlschema>=3.0.1
+commands = python -m unittest
+
 [testenv:docs]
 commands =
     make -C doc html SPHINXOPTS="-W -n"