diff --git a/.travis.yml b/.travis.yml
index bf097e18..a8b001dc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,12 +20,16 @@ env:
 - TOXENV=pypy3-min-req
 - TOXENV=pypy3-unittests
 - TOXENV=flake8
+- TOXENV=markdown-lint
 install:
 - pip install tox
+- gem install mdl
 script:
 - git clean -f -d -x
 - tox
 matrix:
   fast_finish: true
+  allow_failures:
+    - env: TOXENV=markdown-lint
 before_install: pip install codecov
 after_success: codecov
diff --git a/tox.ini b/tox.ini
index 695307d1..e63cb78c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,8 +11,13 @@ deps=
     py{26,27,33,34,py,py3}-{unittests,min-req}: -rrequirements/test.txt
 commands=
     py{26,27,33,34,py,py3}-{unittests,min-req}: {envbindir}/nosetests --with-coverage --cover-package mkdocs mkdocs
-    py{26,27,33,34,py,py3}-integration: {envbindir}/python -m mkdocs.tests.integration --output={envtmpdir}/builds
+    py{26,27,33,34,py,py3}-integration: {envpython} -m mkdocs.tests.integration --output={envtmpdir}/builds
 
 [testenv:flake8]
 deps=-rrequirements/test.txt
 commands={envbindir}/flake8 mkdocs --max-line-length=119 --exclude=mkdocs/compat.py
+
+[testenv:markdown-lint]
+whitelist_externals = mdl
+passenv = *
+commands=mdl docs