Fix tox run for Python 2.

1 files changed, 3 insertions, 0 deletions

diff --git a/tox.ini b/tox.ini
index e63063b..efd471e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,9 @@ envlist =
 commands =
     zope-testrunner --test-path=src []
     sphinx-build -b doctest -d {envdir}/doctrees docs {envdir}/doctest
+deps=
+    py27,pypy: Sphinx < 2
+    py27,pypy: sphinxcontrib-websupport < 1.2
 extras =
     test
     docs