diff --git a/tox.ini b/tox.ini
index 05074761e..22a34f6f8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,32 +10,16 @@ passenv = https_proxy http_proxy no_proxy
 # https://tox.readthedocs.io/en/latest/config.html#confval-extras=MULTI-LINE-LIST
 deps =
     .[test,websupport]
+    du11: docutils==0.11
+    du12: docutils==0.12
+    du13: docutils==0.13.1
+    du14: docutils==0.14
 setenv =
     SPHINX_TEST_TEMPDIR = {envdir}/testbuild
     coverage: PYTEST_ADDOPTS = --cov sphinx
 commands=
     {envpython} -Wall tests/run.py --durations 25 {posargs}
 
-[testenv:du11]
-deps=
-    docutils==0.11
-    {[testenv]deps}
-
-[testenv:du12]
-deps=
-    docutils==0.12
-    {[testenv]deps}
-
-[testenv:du13]
-deps=
-    docutils==0.13.1
-    {[testenv]deps}
-
-[testenv:du14]
-deps=
-    docutils==0.14
-    {[testenv]deps}
-
 [testenv:flake8]
 commands=flake8