diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cf0dacf..205326d 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -29,6 +29,7 @@ jobs:
         - ["3.10",  "py310"]
         - ["3.11",  "py311"]
         - ["3.12",  "py312"]
+        - ["3.13.0-alpha - 3.13.0",  "py313"]
         - ["pypy-3.10", "pypy3"]
         - ["3.9",   "docs"]
         - ["3.9",   "coverage"]
diff --git a/.meta.toml b/.meta.toml
index 54d9b6a..42683df 100644
--- a/.meta.toml
+++ b/.meta.toml
@@ -9,7 +9,7 @@ with-pypy = true
 with-docs = true
 with-sphinx-doctests = false
 with-windows = true
-with-future-python = false
+with-future-python = true
 with-macos = false
 
 [coverage]
diff --git a/CHANGES.rst b/CHANGES.rst
index ae5d1d5..21b3f57 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,7 +5,7 @@
 6.3 (unreleased)
 ================
 
-- Nothing changed yet.
+- Add support for Python 3.13a3.
 
 
 6.2.1 (2023-12-22)
diff --git a/setup.py b/setup.py
index a215466..aab4ef5 100644
--- a/setup.py
+++ b/setup.py
@@ -153,6 +153,7 @@ def read(*names):
         "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 :: Python Modules",
diff --git a/tox.ini b/tox.ini
index 1d3935f..995e70c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,7 @@ envlist =
     py310
     py311
     py312
+    py313
     pypy3
     docs
     coverage
@@ -20,6 +21,7 @@ envlist =
 usedevelop = true
 package = wheel
 wheel_build_env = .pkg
+pip_pre = py313: true
 deps =
 setenv =
     py312: VIRTUALENV_PIP=23.1.2