Index: .travis.yml
===================================================================
--- .travis.yml	(revision 5618)
+++ .travis.yml	(working copy)
@@ -32,8 +32,11 @@
   include:
     - php: hhvm
       env: WP_VERSION=master
+    - php: nightly
+      env: WP_VERSION=master
   allow_failures:
     - php: hhvm
+    - php: nightly
   fast_finish: true
 
 # Before install, failures in this section will result in build status 'errored'