diff --git a/.travis.yml b/.travis.yml
index ef43de1..4df994e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,9 +13,13 @@ install:
   - ./rebar3 update
 
 script:
-  - ./rebar3 eunit
+  - ./rebar3 compile
+  - ./rebar3 eunit skip_deps=true
   - ./rebar3 dialyzer
 
+after_success:
+  - ./rebar3 coveralls send
+
 notifications:
   email:
     recipients:
diff --git a/README.md b/README.md
index 33d1302..5464325 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # yamerl: YAML 1.2 and JSON parser in Erlang
 
 [![Build Status](https://travis-ci.org/yakaz/yamerl.svg?branch=master)](https://travis-ci.org/yakaz/yamerl)
+[![Coverage Status](https://coveralls.io/repos/github/yakaz/yamerl/badge.svg?branch=master)](https://coveralls.io/github/yakaz/yamerl?branch=master)
 [![Hex version](https://img.shields.io/hexpm/v/yamerl.svg "Hex version")](https://hex.pm/packages/yamerl)
 
 YAML is a human-friendly data serialization format. The specification
diff --git a/rebar.config b/rebar.config
index c9d7f17..7422983 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,2 +1,12 @@
 %% -*-erlang-*-
 %% vim:ft=erlang:
+
+%% coveralls.io.
+{plugins, [{coveralls,
+            {git, "https://github.com/markusn/coveralls-erl",
+             {branch, "master"}}}]}.
+{cover_enabled, true}.
+{cover_print_enabled, true}.
+{cover_export_enabled, true}.
+{coveralls_coverdata, "_build/test/cover/eunit.coverdata"}.
+{coveralls_service_name, "travis-ci"}.
diff --git a/rebar.config.script b/rebar.config.script
new file mode 100644
index 0000000..0b3f565
--- /dev/null
+++ b/rebar.config.script
@@ -0,0 +1,10 @@
+%% vim:ft=erlang:
+
+case os:getenv("TRAVIS") of
+    "true" ->
+        JobId = os:getenv("TRAVIS_JOB_ID"),
+        lists:keystore(coveralls_service_job_id, 1, CONFIG,
+                       {coveralls_service_job_id, JobId});
+    _ ->
+        CONFIG
+end.