diff --git a/.travis.yml b/.travis.yml
index cad328a..622f901 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,10 @@
 language: php
 php:
 - 5.5
+- 5.6
+- 7.0
+- 7.1
+- 7.2
 sudo: false
 before_script:
 - composer self-update