diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3a26f20..ef678a1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,18 +10,18 @@ jobs:
       fail-fast: false
       max-parallel: 8
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10", 3.11]
+        python-version: [3.7, 3.8, 3.9, "3.10", 3.11, 3.12]
         os: [ubuntu-latest, windows-latest, macOS-latest]
         include:
-          - os: ubuntu-18.04
+          - os: ubuntu-20.04
             python-version: 3.5
-          - os: ubuntu-18.04
+          - os: ubuntu-20.04
             python-version: 3.6
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
       - name: Setup build and test environment
@@ -58,12 +58,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
-      - name: Set up Python 3.11
+      - uses: actions/checkout@v4
+      - name: Set up Python 3.12
         if: startsWith(github.event.ref, 'refs/tags')
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.11
+          python-version: 3.12
       - name: Build Package
         if: startsWith(github.event.ref, 'refs/tags')
         run: |
diff --git a/README.md b/README.md
index 814766e..fa3e70e 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ print(cf.red('你好'))
 
 ## Usage
 
-**colorful** supports all major Python versions: *3.5*, *3.6* and *3.7*, *3.8*, *3.9*, *3.10*, *3.11*. <br>
+**colorful** supports all major Python versions: *3.5*, *3.6* and *3.7*, *3.8*, *3.9*, *3.10*, *3.11*, *3.12*. <br>
 We recommend to use the latest version released on [PyPI](https://pypi.python.org/pypi/colorful):
 
 ```bash
diff --git a/setup.py b/setup.py
index 07f4f94..888f2d0 100644
--- a/setup.py
+++ b/setup.py
@@ -101,6 +101,7 @@ def read_version():
             'Programming Language :: Python :: 3.9',
             'Programming Language :: Python :: 3.10',
             'Programming Language :: Python :: 3.11',
+            'Programming Language :: Python :: 3.12',
             'Programming Language :: Python :: Implementation',
             'Programming Language :: Python :: Implementation :: CPython',
             'Programming Language :: Python :: Implementation :: PyPy'
diff --git a/tox.ini b/tox.ini
index 16e2b3b..f520544 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = flake8,pypy,py35,py36,py37,py38,py39,py310,py311
+envlist = flake8,pypy,py35,py36,py37,py38,py39,py310,py311,py312
 skip_missing_interpreters = True
 
 [testenv]