diff --git a/.travis.yml b/.travis.yml
index 28b757fe9..21508fb7a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,9 @@
-# Use Docker-based container (instead of OpenVZ)
 sudo: false
 
+# https://blog.travis-ci.com/2017-07-11-trusty-as-default-linux-is-coming
+# Travis now defaults to Trusty, which is missing openjdk6.
+dist: precise
+
 cache:
   directories:
     - $HOME/.ivy2/cache