diff --git a/doc/announce/index.txt b/doc/announce/index.txt
index 9f7e09a35..d06c6bc6c 100644
--- a/doc/announce/index.txt
+++ b/doc/announce/index.txt
@@ -5,6 +5,7 @@ Release announcements
 .. toctree::
    :maxdepth: 2
 
+   release-2.2.1
    release-2.2.0
    release-2.1.3
    release-2.1.2