diff --git a/.gitignore b/.gitignore
index cf09a10..06cfb78 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ premailer/gorunsettings.py
 .DS_Store
 .coverage
 .tox
+/htmlcov/
diff --git a/.travis.yml b/.travis.yml
index f84d580..4ab03d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ language: python
 before_install:
   # twine is necessary so that travis can deploy
   - travis_retry pip install twine
-  - travis_retry pip install coverage tox coveralls
+  - travis_retry pip install tox coveralls
 
 install:
   - travis_retry python setup.py install
diff --git a/tox.ini b/tox.ini
index 9c7d6da..4b63e5a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ envlist = flake8, py26, py27, py32, py33, py34, pypy
 
 [testenv]
 passenv = *
-commands = nosetests
+commands = nosetests --with-coverage --cover-package=premailer
 install_command =
   pip install {opts} {packages}
 
@@ -19,6 +19,7 @@ deps =
     cssselect
     cssutils
     lxml
+    coverage
 
 [testenv:flake8]
 deps = flake8
@@ -27,7 +28,7 @@ commands = flake8 premailer
 [testenv:py26]
 # Python 2.6 is missing both the ordereddict and argparse modules
 # from the standard library.
-commands = nosetests
+commands = nosetests --with-coverage --cover-package=premailer
 install_command =
   pip install {opts} {packages}
 
@@ -40,3 +41,4 @@ deps =
     lxml
     ordereddict
     argparse
+    coverage