diff --git a/tox.ini b/tox.ini
index 8da167b1..893047f1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,9 @@ envlist = py34,py27,pep8,bandit
 
 [testenv]
 deps = -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands =
+  python setup.py test --coverage --coverage-package-name=oslo_config --slowest --testr-args='{posargs}'
+  coverage report --show-missing
 
 [testenv:pep8]
 commands = flake8
@@ -13,6 +15,7 @@ commands = flake8
 setenv = VIRTUAL_ENV={envdir}
 commands =
   python setup.py test --coverage --coverage-package-name=oslo_config --testr-args='{posargs}'
+  coverage report --show-missing
 
 [testenv:venv]
 commands = {posargs}