1 files changed, 1 insertions, 0 deletions
diff --git a/tox.ini b/tox.ini
index ae9fd330..f87480aa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ envlist = py27,py34,py35,pypy26,pep8
 [testenv]
 deps = -U
        -r{toxinidir}/tools/pip-requires
+       -r{toxinidir}/tools/optional-requires
        -r{toxinidir}/tools/test-requires
        --no-cache-dir
 usedevelop = True