diff --git a/containers/zammad-elasticsearch/Dockerfile b/containers/zammad-elasticsearch/Dockerfile
index 631de42..c68953f 100644
--- a/containers/zammad-elasticsearch/Dockerfile
+++ b/containers/zammad-elasticsearch/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.elastic.co/elasticsearch/elasticsearch:5.5.3
+FROM docker.elastic.co/elasticsearch/elasticsearch:5.6.5
 MAINTAINER Zammad <info@zammad.org>
 ARG BUILD_DATE
 
@@ -14,4 +14,4 @@ LABEL org.label-schema.build-date="$BUILD_DATE" \
       org.label-schema.docker.cmd="sysctl -w vm.max_map_count=262144;docker-compose up"
 
 RUN /usr/share/elasticsearch/bin/elasticsearch-plugin remove x-pack --purge \
-    && yes | /usr/share/elasticsearch/bin/elasticsearch-plugin install mapper-attachments
+    && yes | /usr/share/elasticsearch/bin/elasticsearch-plugin install ingest-attachment