diff --git a/tox.ini b/tox.ini
index bbe127a2..c9580961 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py26, py27, py32, py33, py34, pypy, pypy3, flake8
+envlist = py26, py27, py32, py33, py34, pypy, pypy3, flake8, setup.py
 
 [testenv]
 passenv = TRAVIS TRAVIS_JOB_ID TRAVIS_BRANCH
@@ -25,5 +25,6 @@ commands =
 [testenv:setup.py]
 deps =
     docutils
+    pygments
 commands =
     python setup.py check --restructuredtext --metadata --strict