diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1e2299b..1451dd8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,6 +21,8 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
+          - "3.13"
           - "pypy-3.10"
           - "pypy-3.11"
     steps:
@@ -51,7 +53,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
-          python-version: "3.11"
+          python-version: "3.13"
       - name: Install dependencies
         run: pip install tox
       - name: Run ${{ matrix.env }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4e58c6..5c4305f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,7 +21,8 @@ adheres to [Semantic Versioning](https://semver.org/).
 - Use `pyproject.toml` and modern build system
 - Update dev dependencies
 - Update GitHub actions dependencies
-- Add tests for PyPy 3.10 and 3.11
+- Add tests for CPython 3.12 and 3.13, and PyPy 3.10 and 3.11
+- Use CPython 3.13 for misc. tests
 - Improve tox & CI pipelines
 - Use ruff as linter and formatter
 
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 1adc015..4cb3e16 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -7,9 +7,9 @@ build==1.3.0
 # lint
 ruff==0.13.1
 
-# typing
-mypy==1.18.2
-
 # tests
 pytest==8.4.2
 pytest-cov==7.0.0
+
+# type
+mypy==1.18.2
diff --git a/pyproject.toml b/pyproject.toml
index 7decf25..56b2200 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,8 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Utilities",
     "Topic :: System :: Archiving",
     "Topic :: System :: Archiving :: Compression",
@@ -84,7 +86,7 @@ files = "src"
 ignore_missing_imports = false
 follow_imports = "normal"
 # Platform configuration
-python_version = "3.11"
+python_version = "3.13"
 # Disallow dynamic typing
 disallow_any_unimported = true
 disallow_any_decorated = true
diff --git a/tox.ini b/tox.ini
index 1aabe0e..a9db961 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 
 [tox]
 envlist =
-    py, py39, py310, py311, pypy3
+    py, py39, py310, py311, py312, py313, pypy3
     build, generate-integration-files, lint, type
 
 [testenv]