diff --git a/.travis.yml b/.travis.yml
index e7bee7e1..86ddce95 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,19 +5,25 @@ sudo: false
 jobs:
   include:
   - dist: trusty
-    php:
-    - 5.4
-    - 5.5
+    php: 5.4
+  - dist: trusty
+    php: 5.5
   - dist: xenial
-    php:
-    - 5.6
-    - 7.0
-    - 7.1
-    - 7.2
-    - 7.3
-    - 7.4
-    - nightly
-    - hhvm
+    php: 5.6
+  - dist: xenial
+    php: 7.0
+  - dist: xenial
+    php: 7.1
+  - dist: xenial
+    php: 7.2
+  - dist: xenial
+    php: 7.3
+  - dist: xenial
+    php: 7.4
+  - dist: xenial
+    php: nightly
+  - dist: xenial
+    php: hhvm
   allow_failures:
     - php: nightly
     - php: hhvm