diff --git a/.travis.yml b/.travis.yml
index 356b299a6c2..8cf227f5076 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,6 +44,8 @@ matrix:
       env: DB=sqlite
     - php: hhvm
       env: DB=mysql
+    - php: hhvm
+      env: DB=mysqli
     - php: hhvm-nightly
   exclude:
     - php: hhvm