diff --git a/.travis.yml b/.travis.yml
index 9edf386..6e78d23 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,11 @@ matrix:
   - os: osx
     r: devel
 
+r_packages:
+  - covr
+after_success:
+ - Rscript -e 'covr::codecov()'
+
 cache: packages
 sudo: false
 
diff --git a/README.Rmd b/README.Rmd
index de9879d..bb59f74 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -16,6 +16,7 @@ knitr::opts_chunk$set(
 
 # happyR
 [![Build Status](https://travis-ci.org/Illumina/happyR.svg?branch=master)](https://travis-ci.org/Illumina/happyR)
+[![codecov](https://codecov.io/gh/Illumina/happyR/branch/master/graph/badge.svg)](https://codecov.io/gh/Illumina/happyR)
 
 Load [hap.py](https://github.com/Illumina/hap.py) results into an R data structure to enable simple 
 plotting, comparisons and aggregation. The related package [happyCompare](https://github.com/Illumina/happyCompare) builds on happyR with statistical 
diff --git a/README.md b/README.md
index 667a979..6ab1ab0 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 happyR
 ======
 
-[![Build Status](https://travis-ci.org/Illumina/happyR.svg?branch=master)](https://travis-ci.org/Illumina/happyR)
+[![Build Status](https://travis-ci.org/Illumina/happyR.svg?branch=master)](https://travis-ci.org/Illumina/happyR) [![codecov](https://codecov.io/gh/Illumina/happyR/branch/master/graph/badge.svg)](https://codecov.io/gh/Illumina/happyR)
 
 Load [hap.py](https://github.com/Illumina/hap.py) results into an R data structure to enable simple plotting, comparisons and aggregation. The related package [happyCompare](https://github.com/Illumina/happyCompare) builds on happyR with statistical analysis of groups and replicates, as well as providing some more sophisticated plotting and reporting functionality.
 
diff --git a/docs/articles/Precision-recall_curves.html b/docs/articles/Precision-recall_curves.html
index 780ac49..2c8175c 100644
--- a/docs/articles/Precision-recall_curves.html
+++ b/docs/articles/Precision-recall_curves.html
@@ -65,7 +65,7 @@
       <h1>Precision-recall curves</h1>
                         <h4 class="author">Ben Moore</h4>
             
-            <h4 class="date">2017-08-15</h4>
+            <h4 class="date">2017-08-17</h4>
           </div>
 
     
diff --git a/docs/index.html b/docs/index.html
index 202b169..6c20e7f 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -201,6 +201,7 @@ <h2>Developers</h2>
 <h2>Dev status</h2>
 <ul class="list-unstyled">
 <li><a href="https://travis-ci.org/Illumina/happyR"><img src="https://travis-ci.org/Illumina/happyR.svg?branch=master" alt="Build Status"></a></li>
+<li><a href="https://codecov.io/gh/Illumina/happyR"><img src="https://codecov.io/gh/Illumina/happyR/branch/master/graph/badge.svg" alt="codecov"></a></li>
 </ul>
 </div>