diff --git a/.travis.yml b/.travis.yml
index 3b5234d3a34..d18c3126846 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,7 @@ matrix:
       env: HHVM=1 DB=mysql db_class='Cake\Database\Driver\Mysql' db_dsn='mysql:host=0.0.0.0;dbname=cakephp_test' db_database='cakephp_test' db_login='travis' db_password=''
 
 before_script:
+  - sudo apt-get install php5-intl
   - composer self-update
   - composer install --prefer-source --no-interaction --dev
   - sh -c "if [ '$PHPCS' != '1' ]; then sudo locale-gen de_DE; fi"
diff --git a/composer.json b/composer.json
index dd56063f409..269e2da6b0c 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,7 @@
     },
     "require": {
         "php": ">=5.4.19",
+        "ext-intl": "*",
         "ext-mcrypt": "*",
         "ext-mbstring": "*",
         "nesbot/Carbon": "1.8.*"