diff --git a/images/elasticsearch/5.2.1/Dockerfile b/images/elasticsearch/5.6.12/Dockerfile
similarity index 91%
rename from images/elasticsearch/5.2.1/Dockerfile
rename to images/elasticsearch/5.6.12/Dockerfile
index be21352..c38aaed 100644
--- a/images/elasticsearch/5.2.1/Dockerfile
+++ b/images/elasticsearch/5.6.12/Dockerfile
@@ -1,7 +1,7 @@
 # see: https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html
 
 # base image
-FROM docker.elastic.co/elasticsearch/elasticsearch:5.2.1
+FROM docker.elastic.co/elasticsearch/elasticsearch:5.6.12
 USER root
 
 # environmental settings
diff --git a/images/elasticsearch/5.2.1/elasticsearch.yml b/images/elasticsearch/5.6.12/elasticsearch.yml
similarity index 100%
rename from images/elasticsearch/5.2.1/elasticsearch.yml
rename to images/elasticsearch/5.6.12/elasticsearch.yml