diff --git a/doc/requirements.txt b/doc/requirements.txt
index 856012d..f727270 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,7 +1,3 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
-
 sphinx>=2.0.0,!=2.1.0 # BSD
 openstackdocstheme>=2.2.1 # Apache-2.0
 # releasenotes
diff --git a/tox.ini b/tox.ini
index 558e6f8..d5035ba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,6 +35,7 @@
 setenv = PYTHONHASHSEED=0
 
 [testenv:releasenotes]
+deps = {[testenv:docs]deps}
 commands =
   sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html