diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 22acb2d..dbc1daa 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2019, macos-10.15]
+        os: [ubuntu-20.04, windows-2019, macos-11]
 
     steps:
       - uses: actions/checkout@v3
diff --git a/pyproject.toml b/pyproject.toml
index caa4e4b..fa47595 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,14 +29,16 @@ warn_unused_configs = true
 [tool.tox]
 legacy_tox_ini = """
 [tox]
-envlist = py{36,37,38,39},black,flake8,mypy
+envlist = py{36,37,38,39,310,311},black,flake8,mypy
 
 [gh-actions]
 python =
     3.6: py36
     3.7: py37
     3.8: py38
-    3.9: py39, black, flake8, mypy
+    3.9: py39
+    3.10: py310
+    3.11: py311, black, flake8, mypy
 
 [testenv:black]
 deps = black
diff --git a/setup.cfg b/setup.cfg
index 964b3ab..d8e6cd4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,6 +20,7 @@ classifiers =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
 keywords = jump, consistent, hash, jumphash, algorithm
 project_urls =
     Source=https://github.com/lithammer/python-jump-consistent-hash