diff --git a/.travis.yml b/.travis.yml
index 7fc36a0..70a6fed 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,11 +6,11 @@ php:
   - 5.5
   - 5.6
   - hhvm
+  - hhvm-nightly
 
 matrix:
   allow_failures:
-    - php: 5.6
-    - php: hhvm
+    - php: hhvm-nightly
 
 install:
   - composer install