diff --git a/.travis.yml b/.travis.yml
index 40747c9..5ba609e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,8 @@ matrix:
     env: LOGSTASH_BRANCH=master
   - rvm: jruby-9.1.13.0
     env: LOGSTASH_BRANCH=7.0
+  - rvm: jruby-9.1.13.0
+    env: LOGSTASH_BRANCH=6.8
   - rvm: jruby-9.1.13.0
     env: LOGSTASH_BRANCH=6.7
   - rvm: jruby-9.1.13.0