diff --git a/.travis.yml b/.travis.yml
index 08f0ead..b53ac43 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,5 +11,8 @@ php:
 before_script:
   - composer self-update && composer install --dev
 
+script:
+  - ./vendor/bin/phpunit
+
 after_script:
   - php vendor/bin/coveralls
diff --git a/composer.json b/composer.json
index bf3573e..afe2438 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
     },
     "require-dev": {
         "matthiasmullie/scrapbook": "~1.0",
-        "phpunit/phpunit": "4.3.*",
+        "phpunit/phpunit": "~4.8",
         "satooshi/php-coveralls": "dev-master"
     },
     "autoload": {