1 files changed, 1 insertions, 0 deletions

diff --git a/tox.ini b/tox.ini
index f3e9327..7968fba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,6 +5,7 @@ envlist = py26, py27, py31, py32, py33, py34
 downloadcache = {toxworkdir}/cache
 deps = nose
        coverage
+       pyyaml
        pytidylib
 commands = coverage run --source=markdown {toxinidir}/run-tests.py {posargs}
            coverage report --show-missing