diff --git a/.travis.yml b/.travis.yml
index bb1226e..651eec7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,8 @@ php:
   - 5.5
   - 5.6
 
+dist: precise
+
 env:
   - DB=MYSQL CORE_RELEASE=3.5