diff --git a/.travis.yml b/.travis.yml
index fd02670..21851e3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ before_script:
   - php composer.phar install
 
 php:
+  - 5.3.3
   - 5.3
   - 5.4