diff --git a/.travis.yml b/.travis.yml
index 775d207..dbcff2c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,19 +1,21 @@
 language: php
 
 php:
-    - '5.5'
     - '5.6'
     - '7.0'
     - hhvm
-    
+
+matrix:
+    allow_failures:
+    - php: hhvm
+
 cache:
     directories:
         - vendor
-        
+
 before_script:
     - composer self-update && composer --version
     - composer install --dev
 
-script: 
+script:
     - phpunit
-    
\ No newline at end of file