diff --git a/.travis.yml b/.travis.yml
index 8ef2bd5..6353634 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,15 @@
 language: php
 
 php:
-  - hhvm
   - 5.5
+  - 5.4
+  - 5.3
+  - hhvm
 
 matrix:
   allow_failures:
+    - php: 5.4
+    - php: 5.3
     - php: hhvm
 
 install: