diff --git a/.github/workflows/tox.yaml b/.github/workflows/tox.yaml
index e1506e4..73c9213 100644
--- a/.github/workflows/tox.yaml
+++ b/.github/workflows/tox.yaml
@@ -7,12 +7,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13.0-rc.2"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
diff --git a/README.md b/README.md
index 28c576d..f392c9f 100644
--- a/README.md
+++ b/README.md
@@ -214,6 +214,7 @@ For convenience, a web front-end on top of the command-line tool is available at
 ## ChangeLog
 
 ### v3.3.0-dev (???)
+ - Added Python 3.13 support.
  - Added built-in policies for Ubuntu 24.04 LTS server & client, OpenSSH 9.8, and OpenSSH 9.9.
  - Added IPv6 support for DHEat and connection rate tests.
  - Added TCP port information to JSON policy scan results; credit [Fabian Malte Kopp](https://github.com/dreizehnutters).
diff --git a/setup.cfg b/setup.cfg
index 975b460..98168f3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,6 +24,7 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy
     Topic :: Security
diff --git a/src/ssh_audit/ssh_audit.py b/src/ssh_audit/ssh_audit.py
index c7f22a0..f163c5f 100755
--- a/src/ssh_audit/ssh_audit.py
+++ b/src/ssh_audit/ssh_audit.py
@@ -25,7 +25,7 @@
 """
 import concurrent.futures
 import copy
-import getopt
+import getopt  # pylint: disable=deprecated-module
 import json
 import multiprocessing
 import os
diff --git a/tox.ini b/tox.ini
index 61b6af1..4b05c79 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist =
 	py{py3}-{test,pylint,flake8}
-	py{38,39,310,311,312}-{test,mypy,pylint,flake8}
+	py{38,39,310,311,312,313}-{test,mypy,pylint,flake8}
 	cov
 skip_missing_interpreters = true
 
@@ -9,10 +9,10 @@ skip_missing_interpreters = true
 deps =
 	test: pytest
 	test,cov: {[testenv:cov]deps}
-	test,py{38,39,310,311,312}-{type,mypy}: colorama
-	py{38,39,310,311,312}-{type,mypy}: {[testenv:mypy]deps}
-	py{py3,38,39,310,311,312}-{lint,pylint},lint: {[testenv:pylint]deps}
-	py{py3,38,39,310,311,312}-{lint,flake8},lint: {[testenv:flake8]deps}
+	test,py{38,39,310,311,312,313}-{type,mypy}: colorama
+	py{38,39,310,311,312,313}-{type,mypy}: {[testenv:mypy]deps}
+	py{py3,38,39,310,311,312,313}-{lint,pylint},lint: {[testenv:pylint]deps}
+	py{py3,38,39,310,311,312,313}-{lint,flake8},lint: {[testenv:flake8]deps}
 setenv =
 	SSHAUDIT = {toxinidir}/src
 	test: COVERAGE_FILE = {toxinidir}/.coverage.{envname}
@@ -24,9 +24,9 @@ commands =
 	test: coverage combine
 	test: coverage report --show-missing
 	test: coverage html -d {toxinidir}/reports/html/coverage.{envname}
-	py{38,39,310,311,312}-{type,mypy}: {[testenv:mypy]commands}
-	py{py3,38,39,310,311,312}-{lint,pylint},lint: {[testenv:pylint]commands}
-	py{py3,38,39,310,311,312}-{lint,flake8},lint: {[testenv:flake8]commands}
+	py{38,39,310,311,312,313}-{type,mypy}: {[testenv:mypy]commands}
+	py{py3,38,39,310,311,312,313}-{lint,pylint},lint: {[testenv:pylint]commands}
+	py{py3,38,39,310,311,312,313}-{lint,flake8},lint: {[testenv:flake8]commands}
 
 #ignore_outcome =
 #	type: true