diff --git a/.travis.yml b/.travis.yml
index a680e4753..81af8c474 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ php:
   - 5.3.3
   - 5.3
   - 5.4
+  - 5.5
 
 before_script: composer install