diff --git a/.travis.yml b/.travis.yml
index d344d87..8a41f8f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,8 @@
 language: php
 php:
+  - "7.1"
+  - "7.0"
+  - "5.6"
   - "5.5"
   - "5.4"
   - "5.3"