diff --git a/.travis.yml b/.travis.yml
index d9f9f686..30fd81dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,5 +4,13 @@ php:
   - 5.3
   - 5.4
   - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - nightly
+
+matrix:
+  allow_failures:
+    - php: nightly
 
 script: ant