diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1af2cfccd..14cf1ec26 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -71,12 +71,22 @@ jobs:
     steps:
       - run-tox:
           version: py39
+  py310:
+    docker:
+      - image: 'cimg/python:3.10'
+    steps:
+      - run-tox:
+          version: py310
+          sphinx-version: "42,43,44,45,50,51,latest"
 
 workflows:
   version: 2
   tests:
     jobs:
       - build
+      - py310:
+          requires:
+            - build
       - py39:
           requires:
             - build
diff --git a/setup.cfg b/setup.cfg
index 2367c0162..1efe76a88 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,6 +24,7 @@ classifiers =
   Programming Language :: Python :: 3.7
   Programming Language :: Python :: 3.8
   Programming Language :: Python :: 3.9
+  Programming Language :: Python :: 3.10
   Operating System :: OS Independent
   Topic :: Documentation
   Topic :: Software Development :: Documentation
diff --git a/tox.ini b/tox.ini
index 12b7daa32..ad7c6f71d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,6 +2,7 @@
 envlist =
     py{2,27}-sphinx{16,17,18,20,21,22,23,24,30,31,32,33,34,35,40,41,42,43,44,45,50,51}{-html4,-html5,}{-qa,}
     py{3,36,37,38,39}-sphinx{16,17,18,20,21,22,23,24,30,31,32,33,34,35,40,41,42,43,44,45,50,51,latest}{-html4,-html5,}{-qa,}
+    py{310}-sphinx{42,43,44,45,50,51,latest}{-html4,-html5,}{-qa,}
 
 [testenv]
 setev =