diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8d8fa1777..a9b5ce727 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -65,19 +65,21 @@ jobs:
     steps:
       - run-tox:
           version: py38
+          sphinx-version: "17,18,20,21,22,23,24,30,31,32,33,34,35,40,41,42,43,44,45,50,51,52,60,latest"
   py39:
     docker:
       - image: 'cimg/python:3.9'
     steps:
       - run-tox:
           version: py39
+          sphinx-version: "17,18,20,21,22,23,24,30,31,32,33,34,35,40,41,42,43,44,45,50,51,52,60,latest"
   py310:
     docker:
       - image: 'cimg/python:3.10'
     steps:
       - run-tox:
           version: py310
-          sphinx-version: "42,43,44,45,50,51,52,latest"
+          sphinx-version: "42,43,44,45,50,51,52,60,latest"
 
 workflows:
   version: 2
diff --git a/docs/requirements.txt b/docs/requirements.txt
index aaa922b78..7424b7ebd 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-sphinx>=3.0
+sphinx==6.0.0
diff --git a/setup.cfg b/setup.cfg
index f5cf4779b..2effb74d5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,8 +44,9 @@ zip_safe = False
 packages = sphinx_rtd_theme
 python_requires = >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
 install_requires = 
-	sphinx >=1.6,<6
+	sphinx >=1.6,<7
 	docutils <0.19
+	sphinxcontrib-jquery >=3.0.0
 tests_require = 
 	pytest
 
diff --git a/src/theme.js b/src/theme.js
index 504fa642b..db546b4a3 100644
--- a/src/theme.js
+++ b/src/theme.js
@@ -1,3 +1,4 @@
+// jQuery is included via the sphinxcontrib-jquery extension that we depend on
 var jQuery = (typeof(window) != 'undefined') ? window.jQuery : require('jquery');
 
 // Sphinx theme nav state
diff --git a/tox.ini b/tox.ini
index 1fcc90055..a2a6ced17 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,12 +2,14 @@
 envlist =
     # Python 2.7 support was removed in Sphinx 2
     py{27}-sphinx{17,18}{-html4,-html5,}{-qa,}
-    py{36,37,38,39}-sphinx{17,18,20,21,22,23,24,30,31,32,33,34,35,40,41,42,43,44,45,50,51,52,latest}{-html4,-html5,}{-qa,}
+    py{36,37,38,39}-sphinx{17,18,20,21,22,23,24,30,31,32,33,34,35,40,41,42,43,44,45,50,51,52}{-html4,-html5,}{-qa,}
     # Python 3.10 working from Sphinx 4.2 and up
-    py{310}-sphinx{42,43,44,45,50,51,52}{-html4,-html5,latest}{-qa,}
+    py{310}-sphinx{42,43,44,45,50,51,52,latest}{-html4,-html5}{-qa,}
+    # Sphinx 6+ has simplified docutils and Python support
+    py{38,39,10}-sphinx{60}{-html5,}{-qa,}
 
 [testenv]
-setev =
+setenv =
     LANG=C
 deps =
     .
@@ -35,6 +37,7 @@ deps =
     sphinx50: Sphinx>=5.0,<5.1
     sphinx51: Sphinx>=5.1,<5.2
     sphinx52: Sphinx>=5.2,<5.3
+    sphinx60: Sphinx==6.0.0
     # All these Sphinx versions actually break since docutils 0.18, so we need to add this upper bound
     # Projects using these Sphinx versions will have to do the same
     # See: https://github.com/readthedocs/sphinx_rtd_theme/pull/1304