diff --git a/tox.ini b/tox.ini
index f9fe076..cd8b1a5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -37,12 +37,13 @@ commands =
 
 [testenv:cover]
 description = Calculates code coverage
-basepython = python2.7
+setenv =
+    PYTHON=coverage run --source monasca_events_api --parallel-mode
 commands =
-  {[testenv]commands}
-  coverage erase
-  python setup.py test --coverage --testr-args='{posargs}' --coverage-package-name=monasca_events_api
-  coverage report
+    stestr run '{posargs}'
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
 
 [testenv:debug]
 description = Allows to run unit-test with debug mode enabled