diff --git a/.travis.yml b/.travis.yml
index f5dd228a04..616b99c788 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -63,7 +63,7 @@ matrix:
       env: PHPUNIT_ARGS="--exclude-group selenium"
   fast_finish: true
   include:
-    - php: 5.5
+    - php: 5.6
       env: PHPUNIT_ARGS="--group selenium" SELENIUM="yes"
 cache:
   directories: