diff --git a/elasticsearch/Dockerfile b/elasticsearch/Dockerfile
index abed8dca1..895b8056d 100644
--- a/elasticsearch/Dockerfile
+++ b/elasticsearch/Dockerfile
@@ -1,4 +1,4 @@
-ARG BUILD_UPSTREAM="7.14.2"
+ARG BUILD_UPSTREAM="6.8.20"
 FROM elasticsearch:$BUILD_UPSTREAM
 
 # Data persistence