diff --git a/.travis.sh b/.travis.sh
new file mode 100755
index 00000000..ab95ebbc
--- /dev/null
+++ b/.travis.sh
@@ -0,0 +1,10 @@
+#! /usr/bin/env bash
+set -xe
+if [ $TOX_ENV == "coverage" ]
+then
+  pip install coveralls
+  tox -e py27
+  coveralls
+else
+  tox -e $TOX_ENV
+fi
diff --git a/.travis.yml b/.travis.yml
index 301f7689..158770ee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,19 +1,16 @@
 language: python
-
-python:
-    - "2.6"
-    - "2.7"
-    - "3.3"
-    - "3.4"
-
+python: "2.7"
+env:
+- TOX_ENV=py26
+- TOX_ENV=py27
+- TOX_ENV=py33
+- TOX_ENV=py34
+- TOX_ENV=flake8
+- TOX_ENV=docs
+- TOX_ENV=coverage
 install:
-    - pip install -r requirements.txt
-    - pip install coverage==3.6
-    - pip install python-coveralls==2.4.0
-    - export PYTHONPATH=.
-
-before_script: coverage erase
-
-script: ./runtests
-
-after_success: coverage report; coveralls
+- pip install tox
+script: "./.travis.sh"
+matrix:
+  allow_failures:
+    - env: TOXENV=coverage
diff --git a/requirements.txt b/requirements.txt
index 38f7c8bf..8d4a9a7c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,4 @@ Jinja2==2.7.1
 Markdown==2.3.1
 PyYAML==3.10
 watchdog==0.7.0
-coverage==3.7.1
-flake8==2.1.0
 ghp-import==0.4.1
diff --git a/runtests b/runtests
deleted file mode 100755
index 4be83c64..00000000
--- a/runtests
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-coverage run --source=mkdocs mkdocs/test.py $@
-flake8 mkdocs --ignore=E128,E501 --exclude=__init__.py,compat.py
-echo
-coverage report
diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 00000000..9e8ef9b6
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1,3 @@
+coverage
+flake8
+nose
diff --git a/tox.ini b/tox.ini
index a109aff8..9b2dbcba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,16 @@
 [tox]
-envlist = py26,py27,py33,py34,docs
+envlist = py26,py27,py33,py34,docs,flake8
 
 [testenv]
-deps=-rrequirements.txt
-commands=./runtests
+deps=
+    -rrequirements.txt
+    -rtest-requirements.txt
+commands=
+    {envbindir}/nosetests --with-coverage --cover-package mkdocs --cover-html --cover-html-dir {envtmpdir}/coverage mkdocs/test.py
 
 [testenv:docs]
 commands={envbindir}/mkdocs build
+
+[testenv:flake8]
+deps=-rtest-requirements.txt
+commands={envbindir}/flake8 mkdocs --ignore=E128,E501 --exclude=__init__.py,compat.py