diff --git a/.travis.yml b/.travis.yml
index ad742f26..01a6738c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,9 @@ cache:
 
 language: scala
 
+jdk:
+  - openjdk6
+
 script:
   - sbt ++$TRAVIS_SCALA_VERSION test