diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index af05b9f..19d7a30 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -14,6 +14,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
   cancel-in-progress: true
 
+env:
+  DEFAULT_PYTHON: '3.12'
+
 jobs:
   analyze:
     name: Analyze
@@ -27,19 +30,19 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v4
 
-    - name: Set up Python ${{ matrix.python-version }}
+    - name: Set up Python ${{ env.DEFAULT_PYTHON }}
       uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: ${{ env.DEFAULT_PYTHON }}
 
     - name: Cache pip
       uses: actions/cache@v4
       with:
         path: ~/.cache/pip
-        key: ${{ runner.os }}-python-${{ matrix.python-version }}-codeql-${{ hashFiles('requirements*.txt') }}
+        key: ${{ runner.os }}-python-${{ env.DEFAULT_PYTHON }}-codeql-${{ hashFiles('requirements*.txt') }}
         restore-keys: |
-          ${{ runner.os }}-python-${{ matrix.python-version }}-codeql-${{ hashFiles('requirements*.txt') }}
-          ${{ runner.os }}-python-${{ matrix.python-version }}-codeql-
+          ${{ runner.os }}-python-${{ env.DEFAULT_PYTHON }}-codeql-${{ hashFiles('requirements*.txt') }}
+          ${{ runner.os }}-python-${{ env.DEFAULT_PYTHON }}-codeql-
           ${{ runner.os }}-python
           ${{ runner.os }}-
 
diff --git a/.github/workflows/dev-release.yml b/.github/workflows/dev-release.yml
index 16d8265..6c03162 100644
--- a/.github/workflows/dev-release.yml
+++ b/.github/workflows/dev-release.yml
@@ -8,7 +8,7 @@ on:
   workflow_dispatch:
 
 env:
-  DEFAULT_PYTHON: '3.11'
+  DEFAULT_PYTHON: '3.12'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 17c9554..f2a2e57 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@ on:
     - v*
 
 env:
-  DEFAULT_PYTHON: '3.11'
+  DEFAULT_PYTHON: '3.12'
 
 jobs:
   release:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ebb53f7..c01eca5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,6 +13,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
   cancel-in-progress: true
 
+env:
+  DEFAULT_PYTHON: '3.12'
+
 jobs:
   tests:
     name: Run ${{ matrix.mark}} tests (${{ matrix.python-version }} on ${{ matrix.os }})
@@ -27,14 +30,14 @@ jobs:
         include:
         - os: macos-latest
           mark: important
-          python-version: '3.11'
+          python-version: '3.12'
         - os: windows-latest
           mark: important
-          python-version: '3.11'
+          python-version: '3.12'
         # run all the tests only on latest python version
         - os: ubuntu-latest
           mark: all
-          python-version: '3.11'
+          python-version: '3.12'
 
     steps:
     - name: Checkout code
@@ -92,19 +95,19 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
 
-    - name: Set up Python 3.11
+    - name: Set up Python ${{ env.DEFAULT_PYTHON }}
       uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: ${{ env.DEFAULT_PYTHON }}
 
     - name: Cache pip
       uses: actions/cache@v4
       with:
         path: ~/.cache/pip
-        key: ${{ runner.os }}-python-3.11-tests-${{ hashFiles('requirements*.txt') }}
+        key: ${{ runner.os }}-python-${{ env.DEFAULT_PYTHON }}-tests-${{ hashFiles('requirements*.txt') }}
         restore-keys: |
-          ${{ runner.os }}-python-3.11-tests-${{ hashFiles('requirements*.txt') }}
-          ${{ runner.os }}-python-3.11-tests-
+          ${{ runner.os }}-python-${{ env.DEFAULT_PYTHON }}-tests-${{ hashFiles('requirements*.txt') }}
+          ${{ runner.os }}-python-${{ env.DEFAULT_PYTHON }}-tests-
           ${{ runner.os }}-python
           ${{ runner.os }}-
 
diff --git a/.readthedocs.yml b/.readthedocs.yml
index 95053fb..1c48963 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -3,7 +3,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: '3.11'
+    python: '3.12'
   jobs:
     post_checkout:
     - git fetch --unshallow || true
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 4a5ae0f..ed8aebc 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -10,6 +10,12 @@ Changelog
     .. change::
         :tags: general, feature
 
+        Test Python 3.12 compatibility
+
+    .. change::
+        :tags: general, feature
+        :tickets: 93
+
         Remove useless warning if ``tag_filter``, ``tag_formatter`` or ``branch_formatter`` is a regexp instead of function reference.
 
 .. changelog::
diff --git a/setup.py b/setup.py
index 090685d..982220e 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@ def parse_requirements(file: Path) -> list[str]:
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],
diff --git a/setuptools_git_versioning.py b/setuptools_git_versioning.py
index 0ae22b5..68e2187 100644
--- a/setuptools_git_versioning.py
+++ b/setuptools_git_versioning.py
@@ -188,7 +188,7 @@ def _read_toml(name_or_path: str | os.PathLike = "pyproject.toml", root: str | o
 
     log.log(INFO, "Trying 'pyproject.toml' ...")
     try:
-        # for Python 3.11
+        # for Python 3.11+
         import tomllib
 
         with file_path.open("rb") as file: