diff --git a/.travis.yml b/.travis.yml
index 58143d1..f884207 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,12 @@
 language: php
+    - 5.3
+    - 5.4
+    - 5.5
+    - 5.6
+    - 7.0
+    - 7.1
+    - 7.2
+    - hhvm
 git:
     submodules: false
 before_install: