diff --git a/tox.ini b/tox.ini
index 14973c34..71a5a639 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,6 +32,13 @@ downloadcache = ~/cache/pip
 sitepackages = False
 commands = flake8
 
+[testenv:doc8]
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/test-requirements.txt
+    doc8
+commands = doc8 doc/source
+
 [testenv:venv]
 commands = {posargs}