diff --git a/.travis.yml b/.travis.yml
index 87c76fb..59b2380 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,14 @@ language: php
 php:
   - 5.6
   - 7.0
+  - 7.1
+  - nightly
   - hhvm
 
+matrix:
+  allow_failures:
+    - php: nightly
+
 before_script:
   - composer install