diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 937426e..54d73f3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,11 +25,12 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
           - "pypy3.7"
 
     steps:
       - name: Git clone
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -49,21 +50,21 @@ jobs:
         run: |
           python -m pip install -U pip
           python -m pip install -U setuptools wheel
-          python -m pip install -U coverage coveralls
+          python -m pip install -U coverage
           python -m pip install -e .[test]
 
       - name: Run tests
         run: coverage run tests.py
 
       - name: Check test coverage
-        run: coverage report -m --fail-under=100
+        run: |
+          coverage report -m --fail-under=100
+          coverage xml
 
       - name: Report to coveralls
-        run: coveralls
-        continue-on-error: true
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COVERALLS_SERVICE_NAME: github
+        uses: coverallsapp/github-action@v2
+        with:
+          file: coverage.xml
 
   lint:
     name: ${{ matrix.toxenv }}
@@ -79,7 +80,7 @@ jobs:
 
     steps:
       - name: Git clone
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python ${{ env.default_python || '3.11' }}
         uses: actions/setup-python@v4
diff --git a/CHANGES.rst b/CHANGES.rst
index 49c6288..670eee2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,10 +1,10 @@
 Changes
 =======
 
-1.8.9 (unreleased)
+1.8.0 (unreleased)
 ------------------
 
-- Add support for Python 3.8, 3.9, 3.10, and 3.11.
+- Add support for Python 3.8, 3.9, 3.10, 3.11, and 3.12.
 
 - Drop support for Python 2.7, 3.5 and 3.6.
 
diff --git a/appveyor.yml b/appveyor.yml
index 070ed75..5c1a5c2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,11 +4,12 @@ environment:
   matrix:
     # https://www.appveyor.com/docs/installed-software#python lists available
     # versions
-    - PYTHON: "C:\\Python37"
-    - PYTHON: "C:\\Python38"
-    - PYTHON: "C:\\Python39"
-    - PYTHON: "C:\\Python310"
-    - PYTHON: "C:\\Python311"
+    - PYTHON: "C:\\Python37-x64"
+    - PYTHON: "C:\\Python38-x64"
+    - PYTHON: "C:\\Python39-x64"
+    - PYTHON: "C:\\Python310-x64"
+    - PYTHON: "C:\\Python311-x64"
+    - PYTHON: "C:\\Python312-x64"
 
 init:
   - "echo %PYTHON%"
diff --git a/setup.py b/setup.py
index 90d1165..bb6937c 100755
--- a/setup.py
+++ b/setup.py
@@ -54,6 +54,7 @@ def get_description():
           'Programming Language :: Python :: 3.9',
           'Programming Language :: Python :: 3.10',
           'Programming Language :: Python :: 3.11',
+          'Programming Language :: Python :: 3.12',
           'Programming Language :: Python :: Implementation :: CPython',
           'Programming Language :: Python :: Implementation :: PyPy',
           'Topic :: Multimedia :: Graphics',
diff --git a/tox.ini b/tox.ini
index 86b6b94..817a10d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py37,py38,py39,py310,py311,pypy3
+    py37,py38,py39,py310,py311,py312,pypy3
 
 [testenv]
 extras = test