diff --git a/pyproject.toml b/pyproject.toml
index e7215271d8..1dd6d40189 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,6 +25,7 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Topic :: Software Development :: Debuggers",
@@ -223,6 +224,9 @@ tests/functional/t/type/typevar_naming_style_default.py,\
 tests/functional/m/member/member_checks_async.py,\
 """
 
+[tool.pyproject-fmt]
+max_supported_python = "3.14"
+
 [tool.pytest.ini_options]
 testpaths = [ "tests" ]
 python_files = [ "*test_*.py" ]
diff --git a/tox.ini b/tox.ini
index a77a63ab23..b065ce9406 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.0
-envlist = formatting, py310, py311, py312, py313, pypy, benchmark
+envlist = formatting, py310, py311, py312, py313, py314, pypy, benchmark
 skip_missing_interpreters = true
 requires = pip >=21.3.1
 isolated_build = true