diff --git a/.gitignore b/.gitignore
index e625780..ad619f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,3 +52,4 @@ ChangeLog
 *~
 .*.swp
 .*sw?
+/cover/
diff --git a/tox.ini b/tox.ini
index 884c772..cdb05ea 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,9 @@ setenv =
 deps =
     -r{toxinidir}/test-requirements.txt
     .[sphinx]
-commands = python setup.py test --slowest --testr-args='{posargs}'
+commands =
+    python setup.py test --slowest --coverage --coverage-package-name=reno --testr-args='{posargs}'
+    coverage report --show-missing
 
 [testenv:pep8]
 commands = flake8