diff --git a/tox.ini b/tox.ini
index 264b33e8a..57e80d46b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,4 +33,5 @@ whitelist_externals =
   bash
 
 [testenv:releasenotes]
+deps = -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -a -W -E -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html