Update .travis.yml (#22)

Nyholm · web-flow · commit b40e8cbc7f1e · 2017-06-22T12:24:10.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -11,10 +11,12 @@ php:
     - 5.6
     - 7.0
     - 7.1
-    - hhvm
 env:
   global:
     - TEST_COMMAND="composer test"
+  include:
+    - php: hhvm
+      dist: trusty
   matrix:
     - SYMFONY_VERSION=3.1.*
     - SYMFONY_VERSION=3.0.*
