diff --git a/.travis.yml b/.travis.yml
index 1c6b3fd..514f717 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ matrix:
   - rvm: jruby-9.1.10.0
     env: LOGSTASH_BRANCH=master
   - rvm: jruby-1.7.25
-    env: LOGSTASH_BRANCH=5.x
+    env: LOGSTASH_BRANCH=6.x
   fast_finish: true
 install: true
 script: ci/build.sh