diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4042028..890cfa9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -29,8 +29,9 @@ jobs:
           - "3.10"
           - "3.11"
           - "3.12"
+          - "3.13"
         include:
-          - python-version: "pypy-3.7"
+          - python-version: "pypy3.10"
             optional: true
 
     steps:
diff --git a/CHANGES.rst b/CHANGES.rst
index e2190e4..c541319 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,7 +5,7 @@ Changelog
 1.12.0 (unreleased)
 -------------------
 
-- Add support for Python 3.12.
+- Add support for Python 3.12 and 3.13.
 - Drop support for Python 2.7.
 
 
diff --git a/appveyor.yml b/appveyor.yml
index 27bb3e2..066a070 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,6 +10,7 @@ environment:
     - PYTHON: "C:\\Python310"
     - PYTHON: "C:\\Python311"
     - PYTHON: "C:\\Python312"
+    - PYTHON: "C:\\Python313"
 
 init:
   - "echo %PYTHON%"
diff --git a/setup.py b/setup.py
index 30e7a44..ddc373f 100755
--- a/setup.py
+++ b/setup.py
@@ -42,6 +42,7 @@
         "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",
     ],
diff --git a/tox.ini b/tox.ini
index 2c417b6..b415af4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ envlist =
     py310,
     py311,
     py312,
+    py313,
     pypy3,
     flake8,
     isort,