diff --git a/.github/workflows/python-build.yml b/.github/workflows/python-build.yml
index b5ba410a..8108b6dc 100644
--- a/.github/workflows/python-build.yml
+++ b/.github/workflows/python-build.yml
@@ -7,7 +7,7 @@ jobs:
       FORCE_COLOR: 1
     strategy:
       matrix:
-        python: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     steps:
       - name: Set up Python ${{ matrix.python }}
diff --git a/setup.py b/setup.py
index 4043db0f..b80ff3a3 100755
--- a/setup.py
+++ b/setup.py
@@ -57,6 +57,7 @@ def fread(fn):
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Programming Language :: Python :: 3 :: Only',
         'Programming Language :: Python :: Implementation',
         'Programming Language :: Python :: Implementation :: CPython',
diff --git a/tox.ini b/tox.ini
index bae86ada..ae49af48 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 # require tox>=4
 [tox]
-envlist = py38,py39,py310,py311,py312,pypy3,docs,readme,ruff
+envlist = py38,py39,py310,py311,py312,py313,pypy3,docs,readme,ruff
 
 [testenv]
 deps=