diff --git a/.travis.yml b/.travis.yml
index 473a1ac8fba..db0f3196cf8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@
 # from Dolibarr GitHub repository.
 # For syntax, see http://about.travis-ci.org/docs/user/languages/php/
 
+dist: precise
 sudo: required
 
 language: php
@@ -10,7 +11,7 @@ php:
 - '5.3'
 - '5.4'
 - '5.5'
-- '5.6'
+- '5.6.29'
 - '7.0'
 - '7.1'
 - nightly