diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d30a611..234ed5c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, macos-latest, windows-latest]
-        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]
 
     name: Python ${{ matrix.python-version }} on ${{ matrix.platform }}
     runs-on: ${{ matrix.platform }}
diff --git a/pyproject.toml b/pyproject.toml
index dfa58bf..ae68385 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Internet",
     "Topic :: Internet :: Proxy Servers",
     "Topic :: Internet :: WWW/HTTP",
diff --git a/setup.cfg b/setup.cfg
index 6c53b8c..bddf03c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,7 +3,7 @@
 max-line-length = 88
 
 [tox:tox]
-envlist = {py38,py39,py310,py311,py312}-test,py312-{black,lint,flake8,mypy}
+envlist = {py38,py39,py310,py311,py313}-test,py313-{black,lint,flake8,mypy}
 
 [gh-actions]
 python =
@@ -11,28 +11,29 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311
-    3.12: py312,black,lint,flake8,mypy
+    3.12: py312
+    3.13: py313,black,lint,flake8,mypy
 
-[testenv:{py38,py39,py310,py311,py312}-test]
+[testenv:{py38,py39,py310,py311,py312,py313}-test]
 deps =
     pytest-httpserver
     pytest
 
 commands = pytest tests
 
-[testenv:py312-black]
+[testenv:py313-black]
 deps = black
 commands = black --check --diff .
 
-[testenv:py312-lint]
+[testenv:py313-lint]
 deps = pylint
 commands = pylint minfraud
 
-[testenv:py312-flake8]
+[testenv:py313-flake8]
 deps = flake8
 commands = flake8 minfraud
 
-[testenv:py312-mypy]
+[testenv:py313-mypy]
 deps =
     mypy
     pytest_httpserver