diff --git a/.travis.yml b/.travis.yml
index ae9bd3d7c6..bb949a3db7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,3 +26,6 @@ matrix:
   allow_failures:
     - php: hhvm
   fast_finish: true
+  include:
+    - php: 5.5
+      env: PHPUNIT_ARGS="--group selenium"