diff --git a/site/_data/versions.yml b/site/_data/versions.yml
index a8042b7b37..42b6cad6ed 100644
--- a/site/_data/versions.yml
+++ b/site/_data/versions.yml
@@ -1,3 +1,4 @@
+- 1.21.4
 - 1.20.2
 - 1.19.1
 - 1.18.3