Release notes for Gerrit 2.13.4

Change-Id: I184b25a37a503242681a93060824ca0fbe5761a8
diff --git a/releases/2.13.md b/releases/2.13.md
index 8806b86..89fe839 100644
--- a/releases/2.13.md
+++ b/releases/2.13.md
@@ -456,6 +456,40 @@
 
 ## Bugfix Releases
 
+### 2.13.4 {#2.13.4}
+
+* [Issue 5090](https://bugs.chromium.org/p/gerrit/issues/detail?id=5090):
+Fix overwriting of another user's account external Id.
+
+* [Issue 4909](https://bugs.chromium.org/p/gerrit/issues/detail?id=4909):
+Fix broken Gitweb weblink for config history on project access page.
+
+* [Issue 4908](https://bugs.chromium.org/p/gerrit/issues/detail?id=4908):
+Add back support for parent revision weblinks.
+
+  Support for weblinks for the parent revision(s) was removed in 2.13 but
+  this functionality is still wanted by some users. Support is added back,
+  by allowing plugins to provide a specific link for parent revisions. For
+  the built-in Gitweb links, the link template provided by the `revision`
+  setting is used.
+
+* Add DB connection pool verification.
+
+  There was no verification of the connection pool, so a broken connection
+  would result in an internal server error when trying to read a change
+  from the database.
+
+* Add support for moving a change's destination branch with the SSH `review`
+command.
+
+  Version 2.13 introduced the 'move change' REST endpoint, but support via ssh
+  was omitted.
+
+* Add REST endpoint to reindex a single account.
+
+  The new endpoint is useful to manually reindex a single account that has
+  become stale in the index.
+
 ### 2.13.3 {#2.13.3}
 
 * [Issue 4633](https://bugs.chromium.org/p/gerrit/issues/detail?id=4633):