diff --git a/.travis.yml b/.travis.yml
index 83d85f6..4cbac2d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@
 # https://github.com/greghendershott/travis-racket/blob/master/.travis.yml
 # Thanks Greg!
 
+dist: trusty
 language: c
 sudo: false