diff --git a/appveyor.yml b/appveyor.yml
index e7aae8e..4eb2dd8 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -15,6 +15,7 @@ environment:
     - PYTHON: "C:\\Python38-x64"
     - PYTHON: "C:\\Python39-x64"
     - PYTHON: "C:\\Python310-x64"
+    - PYTHON: "C:\\Python311-x64"
 
 install:
   # Newer setuptools is needed for proper support of pyproject.toml
diff --git a/pyproject.toml b/pyproject.toml
index ce2b5bd..5a8c1fd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,7 @@ classifiers = [
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Topic :: Software Development :: Libraries",
 ]
 requires-python = ">=3.7"
diff --git a/tox.ini b/tox.ini
index 6f48bf4..c6260d2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@
 # for testing and it is disabled by default.
 
 [tox]
-envlist = lint, py{37, 38, 39, 310}
+envlist = lint, py{37, 38, 39, 310, 311}
 isolated_build = True
 
 [testenv]
@@ -89,6 +89,23 @@ deps =
     wcwidth
 
 
+[testenv:py311]
+basepython = python3.11
+commands = pytest -v --doctest-modules --ignore benchmark.py {posargs}
+deps =
+    pytest
+
+[testenv:py311-extra]
+basepython = python3.11
+setenv = PYTHONDEVMODE = 1
+commands = pytest -v --doctest-modules --ignore benchmark.py {posargs}
+deps =
+    pytest
+    numpy
+    pandas
+    wcwidth
+
+
 [flake8]
 max-complexity = 22
 max-line-length = 99