diff --git a/test-requirements.txt b/test-requirements.txt
index 9486244..d7340f3 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -6,3 +6,4 @@
 oslo.sphinx
 mox>=0.5.3
 mock>=1.0
+coverage>=3.6
diff --git a/tox.ini b/tox.ini
index 6d596e3..88f2537 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,6 +25,10 @@
 setenv = OS_TEST_PATH=./tempest/tests
 commands = python setup.py test --slowest --testr-arg='tempest\.tests {posargs}'
 
+[testenv:cover]
+setenv = OS_TEST_PATH=./tempest/tests
+commands = python setup.py testr --coverage --testr-arg='tempest\.tests {posargs}'
+
 [testenv:all]
 setenv = VIRTUAL_ENV={envdir}
 commands =