diff --git a/.travis.yml b/.travis.yml
index cffabe21..c68c1ed8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,11 +4,10 @@ php:
     - 5.4
     - 5.5
     - 5.6
+    - hhvm
 
 env:
     - SYMFONY_VERSION=2.3.*
-    - SYMFONY_VERSION=2.4.*
-    - SYMFONY_VERSION=dev-master
 
 before_script:
     - composer require symfony/symfony:${SYMFONY_VERSION} --no-interaction --prefer-source --dev
@@ -20,3 +19,10 @@ script:
 matrix:
     allow_failures:
         - env: SYMFONY_VERSION=dev-master
+    include:
+      - php: 5.5
+        env: SYMFONY_VERSION=2.4.*
+      - php: 5.5
+        env: SYMFONY_VERSION=2.5.*
+      - php: 5.5
+        env: SYMFONY_VERSION=dev-master