diff --git a/.travis.yml b/.travis.yml
index e523f7ce28..94ab6f7b79 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ php:
   - "5.5"
   - "5.4"
   - "5.3"
+  - hhvm
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq ant