diff --git a/.travis.yml b/.travis.yml
index fd4bee3..756c6d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,7 @@ matrix:
   allow_failures:
       - php: 5.4
       - php: 5.5
+      - php: nightly
 
 install: composer install --dev