diff --git a/Dockerfile b/Dockerfile
index 52decb5..533c81d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,2 +1,2 @@
-FROM docker.elastic.co/elasticsearch/elasticsearch:8.2.0
+FROM docker.elastic.co/elasticsearch/elasticsearch:7.17.3
 RUN bin/elasticsearch-plugin install --batch ingest-attachment