diff --git a/.travis.yml b/.travis.yml
index e38ab96..aa0e33d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,13 @@
 language: elixir
+
 elixir:
-    - 1.8.1
+  - 1.8.1
+
 otp_release:
-    - 21.0
-script: mix test
+  - 21.0
+
+script:
+  - MIX_ENV=test mix do compile --warnings-as-errors, coveralls.json
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/README.md b/README.md
index d323ecf..f836e53 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Tres - an Elixir OpenFlow development platform
 
+[![Build Status](https://travis-ci.org/shun159/tres.svg?branch=develop)](https://travis-ci.org/shun159/tres)
+
 ## Overview
 
 Tres is a framework and set of helper libraries to develop OpenFlow controllers in Elixir.