diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..d978679
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,2 @@
+[run]
+omit = *tests*
diff --git a/.travis.yml b/.travis.yml
index 14ed583..725c58d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,11 @@ python:
   - "3.5"
   - "pypy"
 # command to install dependencies
-#install: "pip install -r requirements.txt --use-mirrors"
+install:
+  - pip install coveralls
+  # Need to do this since coverage is broken in travis https://github.com/travis-ci/travis-ci/issues/4866
+  - pip install 'coverage<4'
 # command to run tests
-script: nosetests
+script: nosetests --with-coverage --cover-package=voluptuous
+after_success:
+  - coveralls
\ No newline at end of file
diff --git a/README.md b/README.md
index 1eae118..fc26f40 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Voluptuous is a Python data validation library
 
 [![Build Status](https://travis-ci.org/alecthomas/voluptuous.png)](https://travis-ci.org/alecthomas/voluptuous) [![Stories in Ready](https://badge.waffle.io/alecthomas/voluptuous.png?label=ready&title=Ready)](https://waffle.io/alecthomas/voluptuous)
+[![Coverage Status](https://coveralls.io/repos/github/alecthomas/voluptuous/badge.svg?branch=master)](https://coveralls.io/github/alecthomas/voluptuous?branch=master)
 
 Voluptuous, *despite* the name, is a Python data validation library. It
 is primarily intended for validating data coming into Python as JSON,