diff --git a/.travis.yml b/.travis.yml
index 13e6b6fc..63db6ca1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,12 +6,12 @@ php:
   - 5.6
   - 7.0
   - 7.1
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
 
-# also test against HHVM, but require "trusty" and ignore errors
 matrix:
-  include:
-    - php: hhvm
-      dist: trusty
   allow_failures:
     - php: hhvm