diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b28e2c4..28f2888 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,22 +9,22 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     services:
       postgres:
-        image: postgres:14
+        image: postgres:15
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
           POSTGRES_DB: postgres
         ports:
-        - 5432/tcp
+          - 5432/tcp
         options: >-
           --health-cmd pg_isready
           --health-interval 10s
           --health-timeout 5s
-          --health-retries 5
+          --health-retries 10
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f80e2b1..fbf1874 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
           - "--target-version"
           - "py39"
   - repo: https://github.com/PyCQA/flake8
-    rev: "7.1.1"
+    rev: "7.3.0"
     hooks:
       - id: flake8
         args: ["--max-line-length", "110"]
@@ -18,12 +18,12 @@ repos:
     hooks:
       - id: isort
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.18.0
+    rev: v3.20.0
     hooks:
     -   id: pyupgrade
         args: [--py39-plus]
   - repo: https://github.com/adamchainz/django-upgrade
-    rev: 1.22.1
+    rev: 1.25.0
     hooks:
     - id: django-upgrade
       args: [--target-version, "4.2"]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e3a81af..bc27396 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 #### Improvements
 
+- Add Python 3.13 support. ([#671](https://github.com/jazzband/django-auditlog/pull/671))
 - feat: Added `LogEntry.remote_port` field. ([#671](https://github.com/jazzband/django-auditlog/pull/671))
 - Drop Python 3.8 support. ([#678](https://github.com/jazzband/django-auditlog/pull/678))
 - Confirm Django 5.1 support and drop Django 3.2 support. ([#677](https://github.com/jazzband/django-auditlog/pull/677))
diff --git a/auditlog/models.py b/auditlog/models.py
index 26e9615..614ed24 100644
--- a/auditlog/models.py
+++ b/auditlog/models.py
@@ -3,7 +3,7 @@ import contextlib
 import json
 from copy import deepcopy
 from datetime import timezone
-from typing import Any, Callable, Union
+from typing import Any, Callable
 
 from dateutil import parser
 from dateutil.tz import gettz
diff --git a/auditlog_tests/test_settings.py b/auditlog_tests/test_settings.py
index 6eda1cb..e89d659 100644
--- a/auditlog_tests/test_settings.py
+++ b/auditlog_tests/test_settings.py
@@ -1,6 +1,7 @@
 """
 Settings file for the Auditlog test suite.
 """
+
 import os
 
 DEBUG = True
@@ -14,6 +15,7 @@ INSTALLED_APPS = [
     "django.contrib.sessions",
     "django.contrib.admin",
     "django.contrib.staticfiles",
+    "django.contrib.postgres",
     "auditlog",
     "auditlog_tests",
 ]
diff --git a/setup.py b/setup.py
index 0bfbc3b..73da662 100644
--- a/setup.py
+++ b/setup.py
@@ -37,6 +37,7 @@ setup(
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Framework :: Django",
         "Framework :: Django :: 4.2",
         "Framework :: Django :: 5.0",
diff --git a/tox.ini b/tox.ini
index c7e845a..dae5665 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,9 @@
 [tox]
 envlist =
     {py39,py310,py311}-django42
-    {py310,py311,py312}-django{50,51,main}
+    {py310,py311,py312}-django50
+    {py310,py311,py312,py313}-django51
+    {py312,py313}-djangomain
     py39-docs
     py39-lint
 
@@ -30,6 +32,7 @@ passenv=
     TEST_DB_PORT
 
 basepython =
+    py313: python3.13
     py312: python3.12
     py311: python3.11
     py310: python3.10
@@ -51,3 +54,4 @@ python =
   3.10: py310
   3.11: py311
   3.12: py312
+  3.13: py313