diff --git a/tox.ini b/tox.ini
index f2478e3b..2a38889f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,6 +21,12 @@ deps = -r{toxinidir}/requirements.txt
        sphinx
 commands = {posargs:}
 
+[testenv:cover]
+commands =
+  coverage erase
+  python setup.py testr --coverage \
+    --testr-args='--concurrency=1 {posargs}'
+
 [testenv:devenv]
 envdir = devenv
 usedevelop = True