diff --git a/.travis.yml b/.travis.yml
index 8acedf9..148c393 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,5 @@
+dist: trusty
+
 language: php
 
 matrix:
@@ -11,9 +13,7 @@ matrix:
     - php: 7.0
     - php: 7.1
     - php: hhvm
-      dist: trusty
     - php: hhvm-nightly
-      dist: trusty
     - php: nightly
 
 before_script: