diff --git a/.travis.yml b/.travis.yml
index 78bd24f117..a6b08726a5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ matrix:
   include:
   - php: 5.5
     env: WP_TRAVISCI=travis:js
+  - php: 5.2
+    env: WP_TRAVISCI=travis:phpunit
   - php: 5.3
     env: WP_TRAVISCI=travis:phpunit
   - php: 5.4