diff --git a/tox.ini b/tox.ini
index 76b92aa53..17fe0e3e4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,6 +47,8 @@ commands=
 basepython = python2.7
 deps =
     flake8
+    # pygments required by rst-lint
+    pygments  
     restructuredtext_lint
     check-manifest
 commands =