diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9d0c4b05..ae2640f1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -18,6 +18,7 @@ jobs:
         - 3.8
         - 3.9
         - '3.10'
+        - '3.11'
 
     steps:
       - uses: actions/checkout@v2
diff --git a/setup.cfg b/setup.cfg
index 454d28d4..25ae034a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,6 +20,7 @@ classifiers =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
     Topic :: Internet :: WWW/HTTP
 project_urls =
     Documentation = https://asgi.readthedocs.io/
diff --git a/tox.ini b/tox.ini
index a8b03260..ec0a89af 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{37,38,39,310}-{test,mypy}
+    py{37,38,39,310,311}-{test,mypy}
     qa
 
 [testenv]