diff --git a/.travis.yml b/.travis.yml
index c6d43cd92..74660ce9a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
-# XXX: Precise is already deprecated, new default is Trusty.
-# https://blog.travis-ci.com/2017-07-11-trusty-as-default-linux-is-coming
-dist: precise
-sudo: true
+dist: trusty
+sudo: false
 language: c
 
+cache: ccache
+
 jobs:
   include:
     - &test-ubuntu
@@ -59,6 +59,7 @@ jobs:
 
     - stage: test
       compiler: gcc
+      sudo: true
       addons:
         apt:
           packages: