diff --git a/noxfile.py b/noxfile.py
index 2b103b9..963235d 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -120,7 +120,7 @@ def system(session):
         session.run("py.test", "--verbose", system_test_folder_path, *session.posargs)
 
 
-@nox.session(python=["3.7", "3.8", "3.9", "3.10"])
+@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11"])
 @nox.parametrize(
     "library",
     ["python-pubsub", "python-texttospeech", "python-speech"],
@@ -160,7 +160,7 @@ def test(session, library):
             session.install("psutil")
         system(session)
 
-@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 tests_local(session):
     """Run tests in this local repo."""
     # Install all test dependencies, then install this package in-place.
diff --git a/setup.py b/setup.py
index 9bdd1f0..e08f059 100644
--- a/setup.py
+++ b/setup.py
@@ -55,6 +55,7 @@
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: Implementation :: CPython",
     ],
     description=description,
diff --git a/testing/constraints-3.11.txt b/testing/constraints-3.11.txt
new file mode 100644
index 0000000..e69de29