diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d53794d..816740c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
       - uses: actions/checkout@v3
diff --git a/pylitterbot/__init__.py b/pylitterbot/__init__.py
index 3dc8484..24f4798 100644
--- a/pylitterbot/__init__.py
+++ b/pylitterbot/__init__.py
@@ -1,5 +1,5 @@
 """pylitterbot module."""
-__version__ = "2023.1.2"
+__version__ = "2023.4.0"
 
 from .account import Account
 from .robot import Robot
diff --git a/pyproject.toml b/pyproject.toml
index cd53e72..1369615 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pylitterbot"
-version = "2023.1.2"
+version = "2023.4.0"
 description = "Python package for controlling Whisker automatic robots."
 authors = ["Nathan Spencer <natekspencer@gmail.com>"]
 license = "MIT"
diff --git a/tests/test_init.py b/tests/test_init.py
index e2ba4dc..e7d35bf 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -4,4 +4,4 @@
 
 def test_version() -> None:
     """Test the version."""
-    assert __version__ == "2023.1.2"
+    assert __version__ == "2023.4.0"
diff --git a/tox.ini b/tox.ini
index 3af9b23..30eb590 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 isolated_build = True
-envlist = lint, mypy, py38, py39, py310
+envlist = lint, mypy, py38, py39, py310, py311
 skip_missing_interpreters = True
 
 [tox:.package]