diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c0b3197..9c960f7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,10 +18,11 @@ jobs:
       TOX_PARALLEL_NO_SPINNER: 1
 
     steps:
-      - name: Switch to using Python 3.8 by default
+      - name: Switch to using Python 3.9 by default
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          cache: "pip"
+          python-version: 3.9
 
       - name: Install tox
         run: python3 -m pip install --user tox
diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index f5fe524..3423a3f 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -32,18 +32,23 @@ jobs:
             skip_vagrant: true
           - tox_env: packaging
             os: ubuntu-20.04
-            python-version: 3.8
+            python-version: "3.10"
+            unit: false
+            skip_vagrant: true
+          - tox_env: packaging
+            os: ubuntu-22.04
+            python-version: "3.11"
             unit: false
             skip_vagrant: true
-          - tox_env: py38
-            os: macos-10.15
-            python-version: 3.8
           - tox_env: py39
             os: macos-10.15
-            python-version: 3.9
+            python-version: "3.9"
           - tox_env: py310
             os: macos-10.15
             python-version: "3.10"
+          - tox_env: py311
+            os: macos-10.15
+            python-version: "3.11"
 
     env:
       TOX_PARALLEL_NO_SPINNER: 1
@@ -71,6 +76,7 @@ jobs:
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
+          cache: "pip"
           python-version: ${{ matrix.python-version }}
 
       - name: Enable vagrant box caching
diff --git a/README.md b/README.md
index eb1a874..a67464f 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ backwards-compatible features or bug fixes are added.
 - Vagrant 2.2 or greater. Using the latest version of Vagrant is strongly
   recommended.
 - Vagrant requires VirtualBox, VMWare, or another supported provider.
-- Python 3.8 or newer.
+- Python 3.9 or newer.
 - The Sahara gem for Vagrant is optional. It will allow you to use
   `SandboxVagrant`.
 
diff --git a/pyproject.toml b/pyproject.toml
index cf55f82..6b8268d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 # https://peps.python.org/pep-0621/#readme
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dynamic = ["version"]
 name = "python-vagrant"
 description = "Python bindings for interacting with Vagrant virtual machines."
@@ -21,9 +21,9 @@ classifiers = [
   "Development Status :: 4 - Beta",
   "License :: OSI Approved :: MIT License",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.10",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
   "Topic :: Utilities",
 ]
 keywords = ["box", "vagrant", "vagrantfile", "virtual-machine", "virtualbox"]
@@ -52,7 +52,7 @@ exclude_lines = ["pragma: no cover", "if TYPE_CHECKING:"]
 profile = "black"
 
 [tool.mypy]
-python_version = 3.8
+python_version = 3.9
 color_output = true
 error_summary = true
 check_untyped_defs = true