Link to 2.12.4

Change-Id: I7f72730ebc2eb385dd06a316e9b5b184aade9d54
diff --git a/index.md b/index.md
index be5143c..289d5cb 100644
--- a/index.md
+++ b/index.md
@@ -24,7 +24,7 @@
 
 ## Download
 
-[Gerrit 2.12.3][download]
+[Gerrit 2.12.4][download]
 
 ***
 
@@ -89,7 +89,7 @@
 
 |||---|||
 
-[download]: https://gerrit-documentation.storage.googleapis.com/ReleaseNotes/ReleaseNotes-2.12.3.html
-[git gc]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.3/config-gerrit.html#gc
-[plugins]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.3/config-plugins.html
+[download]: https://gerrit-documentation.storage.googleapis.com/ReleaseNotes/ReleaseNotes-2.12.4.html
+[git gc]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.4/config-gerrit.html#gc
+[plugins]: https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.4/config-plugins.html
 [replicate]: https://gerrit.googlesource.com/plugins/replication/+doc/master/src/main/resources/Documentation/config.md