diff --git a/.travis.yml b/.travis.yml
index f2bf1c2..209b8ce 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,9 @@ language: php
 
 matrix:
   allow_failures:
+    - php: 5.4
+    - php: 5.5
+    - php: 5.6
     - php: hhvm
     - php: hhvm-nightly
     - php: nightly