diff --git a/tox.ini b/tox.ini
index b09458d9..ceb42b6d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,11 @@
 [tox]
-envlist = py26, py27, pypy, py33
+envlist = docs, py26, py27, pypy, py33
 
 [testenv]
 deps = blinker
 commands = python run-tests.py []
+
+
+[testenv:docs]
+deps = sphinx
+commands = sphinx-build -W -b linkcheck -d {envtmpdir}/doctrees docs docs/_build/linkcheck