diff --git a/.gitignore b/.gitignore
index 9755f83f..5e7b1b5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ composer.lock
 composer.phar
 /vendor/
 docs/reactivex.github.io
+build/
diff --git a/.travis.yml b/.travis.yml
index 673a932f..72449e57 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,10 @@ php:
 before_script: composer install
 
 script:
+  - mkdir -p build/logs
   - phpunit
   - php demo/test.php
   - php docs/build-docs.php lint
+
+after_success:
+  - travis_retry php vendor/bin/coveralls -v
diff --git a/composer.json b/composer.json
index f6448339..0c5aad7c 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,9 @@
     },
     "require-dev": {
         "react/event-loop": "~0.4.1",
-        "react/promise": "~2.2"
+        "react/promise": "~2.2",
+        "satooshi/php-coveralls": "~1.0",
+        "phpunit/phpcov": "2.*"
     },
     "suggest": {
         "react/event-loop": "For using event-loop based scheduling.",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index fc3ce90a..41506bac 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -22,4 +22,7 @@
       <directory suffix=".php">./lib/</directory>
     </whitelist>
   </filter>
+  <logging>
+    <log type="coverage-clover" target="build/logs/clover.xml"/>
+  </logging>
 </phpunit>