diff --git a/Gemfile.jruby-1.9.lock b/Gemfile.jruby-1.9.lock
index 9451bdf39..99bf942c8 100644
--- a/Gemfile.jruby-1.9.lock
+++ b/Gemfile.jruby-1.9.lock
@@ -431,7 +431,7 @@ GEM
       logstash-filter-json
       logstash-input-generator
       logstash-output-file
-    logstash-output-elasticsearch (2.6.0-java)
+    logstash-output-elasticsearch (2.5.5-java)
       cabin (~> 0.6)
       concurrent-ruby
       elasticsearch (~> 1.0, >= 1.0.13)