From a9cc4e36c6bef0aaa678e781984b76b5ce29dc07 Mon Sep 17 00:00:00 2001
From: allegroai <>
Date: Sun, 23 Aug 2020 15:41:05 +0300
Subject: [PATCH] Update docs

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index 768d7da..3756298 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,12 @@
 
 ## :rocket: Trains-Agent Services is now included, for more information see [services](https://github.com/allegroai/trains-server#services)
 
+## v0.16 Upgrade Notice
+
+In v0.16, the Elasticsearch subsystem of Trains Server has been upgraded from version 5.6 to version 7.6. This change necessitates the migration of the database contents to accommodate the change in index structure across the different versions.  
+
+Follow [this procedure](https://allegro.ai/docs/deploying_trains/trains_server_es7_migration/) to migrate existing data.
+
 ## Introduction
 
 The **trains-server** is the backend service infrastructure for [Trains](https://github.com/allegroai/trains).