diff --git a/.travis.yml b/.travis.yml
index dc7817c..38c9928 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 language: php
 
 php:
+  - 5.5
   - 5.4
-  - 5.3
\ No newline at end of file
+  - 5.3
+  - 5.2
\ No newline at end of file