diff --git a/.github/sync-repo-settings.yaml b/.github/sync-repo-settings.yaml
index 6d2c2a0e..4db5c136 100644
--- a/.github/sync-repo-settings.yaml
+++ b/.github/sync-repo-settings.yaml
@@ -15,11 +15,13 @@ branchProtectionRules:
     - 'unit_grpc_gcp-3.8'
     - 'unit_grpc_gcp-3.9'
     - 'unit_grpc_gcp-3.10'
+    - 'unit_grpc_gcp-3.11'
     - 'unit-3.7'
     - 'unit-3.8'
     - 'unit-3.9'
     - 'unit-3.10'
-    - 'unit_wo_grpc-3.10'
+    - 'unit-3.11'
+    - 'unit_wo_grpc-3.11'
     - 'cover'
     - 'docs'
     - 'docfx'
diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index cd1d4d60..9383f29f 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -17,6 +17,7 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
         exclude:
           - option: "_wo_grpc"
             python: 3.7
@@ -24,6 +25,8 @@ jobs:
             python: 3.8
           - option: "_wo_grpc"
             python: 3.9
+          - option: "_wo_grpc"
+            python: 3.10
     steps:
     - name: Checkout
       uses: actions/checkout@v3
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index dddeddb9..13d7a516 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -21,7 +21,7 @@ In order to add a feature:
   documentation.
 
 - The feature must work fully on the following CPython versions:
-  3.7, 3.8, 3.9, and 3.10 on both UNIX and Windows.
+  3.7, 3.8, 3.9, 3.10, and 3.11 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
   "unnecessary" is of course subjective, but new dependencies should
@@ -71,7 +71,7 @@ We use `nox <https://nox.readthedocs.io/en/latest/>`__ to instrument our tests.
 
 - To run a single unit test::
 
-    $ nox -s unit-3.10 -- -k <name of test>
+    $ nox -s unit-3.11 -- -k <name of test>
 
 
   .. note::
@@ -201,11 +201,13 @@ We support:
 -  `Python 3.8`_
 -  `Python 3.9`_
 -  `Python 3.10`_
+-  `Python 3.11`_
 
 .. _Python 3.7: https://docs.python.org/3.7/
 .. _Python 3.8: https://docs.python.org/3.8/
 .. _Python 3.9: https://docs.python.org/3.9/
 .. _Python 3.10: https://docs.python.org/3.10/
+.. _Python 3.11: https://docs.python.org/3.11/
 
 
 Supported versions can be found in our ``noxfile.py`` `config`_.
diff --git a/noxfile.py b/noxfile.py
index 2d8f1e02..0d19be0d 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -137,13 +137,13 @@ def default(session, install_grpc=True):
     session.run(*pytest_args)
 
 
-@nox.session(python=["3.7", "3.8", "3.9", "3.10"])
+@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11"])
 def unit(session):
     """Run the unit test suite."""
     default(session)
 
 
-@nox.session(python=["3.6", "3.7", "3.8", "3.9", "3.10"])
+@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11"])
 def unit_grpc_gcp(session):
     """Run the unit test suite with grpcio-gcp installed."""
     constraints_path = str(
@@ -157,7 +157,7 @@ def unit_grpc_gcp(session):
     default(session)
 
 
-@nox.session(python=["3.8", "3.10"])
+@nox.session(python=["3.8", "3.11"])
 def unit_wo_grpc(session):
     """Run the unit test suite w/o grpcio installed"""
     default(session, install_grpc=False)
diff --git a/setup.py b/setup.py
index 1e746c8e..3346665f 100644
--- a/setup.py
+++ b/setup.py
@@ -86,6 +86,7 @@
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Operating System :: OS Independent",
         "Topic :: Internet",
     ],