From d672bc31baa74ff6070cab6c779ca4f40762ab34 Mon Sep 17 00:00:00 2001
From: clokep <clokep@users.noreply.github.com>
Date: Tue, 28 Nov 2023 16:02:51 +0000
Subject: deploy: 77882b6a7d1ad1ab76b0ff878b3daed894bdb26e

---
 develop/upgrade.html | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'develop/upgrade.html')

diff --git a/develop/upgrade.html b/develop/upgrade.html
index e6dc764a00..43143ebc5b 100644
--- a/develop/upgrade.html
+++ b/develop/upgrade.html
@@ -231,6 +231,29 @@ dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
 </code></pre>
 </li>
 </ul>
+<p>Generally Synapse database schemas are compatible across multiple versions, once
+a version of Synapse is deployed you may not be able to rollback automatically.
+The following table gives the version ranges and the earliest version they can
+be rolled back to. E.g. Synapse versions v1.58.0 through v1.61.1 can be rolled
+back safely to v1.57.0, but starting with v1.62.0 it is only safe to rollback to
+v1.61.0.</p>
+<table><thead><tr><th>Versions</th><th>Compatible version</th></tr></thead><tbody>
+<tr><td>v1.0.0 – v1.2.1</td><td>v1.0.0</td></tr>
+<tr><td>v1.3.0 – v1.8.0</td><td>v1.3.0</td></tr>
+<tr><td>v1.9.0 – v1.12.4</td><td>v1.9.0</td></tr>
+<tr><td>v1.13.0 – v1.25.0</td><td>v1.13.0</td></tr>
+<tr><td>v1.26.0 – v1.44.0</td><td>v1.26.0</td></tr>
+<tr><td>v1.45.0 – v1.47.1</td><td>v1.38.0</td></tr>
+<tr><td>v1.48.0 – v1.51.0</td><td>v1.39.0</td></tr>
+<tr><td>v1.52.0 – v1.57.1</td><td>v1.49.0</td></tr>
+<tr><td>v1.58.0 – v1.61.1</td><td>v1.57.0</td></tr>
+<tr><td>v1.62.0 – v1.63.1</td><td>v1.61.0</td></tr>
+<tr><td>v1.64.0 – v1.69.0</td><td>v1.62.0</td></tr>
+<tr><td>v1.70.0 – v1.82.0</td><td>v1.68.0</td></tr>
+<tr><td>v1.83.0 – v1.84.1</td><td>v1.77.0</td></tr>
+<tr><td>v1.85.0 – v1.91.2</td><td>v1.83.0</td></tr>
+<tr><td>v1.92.0 – v1.97.0</td><td>v1.90.0</td></tr>
+</tbody></table>
 <h1 id="upgrading-to-v1930"><a class="header" href="#upgrading-to-v1930">Upgrading to v1.93.0</a></h1>
 <h2 id="minimum-supported-rust-version"><a class="header" href="#minimum-supported-rust-version">Minimum supported Rust version</a></h2>
 <p>The minimum supported Rust version has been increased from v1.60.0 to v1.61.0.
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