diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 83c45e0..ca7db20 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - uses: actions/checkout@v3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e20ba2b..b6e7ecc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,19 @@
 # Change Log
 
-## [unpublished]
+## [0.5.12] - 2024-12-15
 
 - Changed
   - Dropped support for Python 3.8
   - Use "modern" type annotation, such as `list` and `str | None`
 - Added
+
   - Added static type checking using `mypy`
   - A new config option,
     `--only-attrs-with-ClassVar-are-treated-as-class-attrs`
+  - Ensured support for Python 3.12 and 3.13
+
+- Full diff
+  - https://github.com/jsh9/pydoclint/compare/0.5.11...0.5.12
 
 ## [0.5.11] - 2024-12-14
 
@@ -18,7 +23,7 @@
     itself (https://github.com/jsh9/pydoclint/issues/175)
 
 - Full diff
-  - https://github.com/jsh9/pydoclint/compare/0.5.11...0.5.10
+  - https://github.com/jsh9/pydoclint/compare/0.5.10...0.5.11
 
 ## [0.5.10] - 2024-12-07
 
diff --git a/setup.cfg b/setup.cfg
index 7586af2..f090d8d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = pydoclint
-version = 0.5.11
+version = 0.5.12
 description = A Python docstring linter that checks arguments, returns, yields, and raises sections
 long_description = file: README.md
 long_description_content_type = text/markdown
diff --git a/tox.ini b/tox.ini
index c5d39f0..3a1dc43 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ envlist =
     py310
     py311
     py312
+    py313
     mypy
     cercis
     check-self
@@ -18,6 +19,8 @@ python =
     3.9: py39, mypy, cercis, check-self, flake8-basic, flake8-misc, flake8-docstrings, pre-commit
     3.10: py310, mypy, cercis, check-self, flake8-basic, flake8-misc, flake8-docstrings, pre-commit
     3.11: py311, mypy, cercis, check-self, flake8-basic, flake8-misc, flake8-docstrings, pre-commit
+    3.12: py311, mypy, cercis, check-self, flake8-basic, flake8-misc, flake8-docstrings, pre-commit
+    3.13: py311, mypy, cercis, check-self, flake8-basic, flake8-misc, flake8-docstrings, pre-commit
 
 
 [testenv:mypy]