1 files changed, 3 insertions, 0 deletions
diff --git a/tox.ini b/tox.ini
index 28ff16a6..8a48a1cd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,9 @@ toxworkdir={env:TOX_WORK_DIR:.tox}
 
 [testenv]
 deps =
+	# workaround for sphinx-doc/sphinx#9562
+	# TODO: remove after Sphinx>4.1.2 is available.
+	sphinx@git+https://github.com/sphinx-doc/sphinx; python_version>="3.10"
 commands =
 	pytest {posargs}
 usedevelop = True