diff --git a/doc/userguide/upgrade.rst b/doc/userguide/upgrade.rst
index 4bf74b65284d..d47b6012129d 100644
--- a/doc/userguide/upgrade.rst
+++ b/doc/userguide/upgrade.rst
@@ -82,6 +82,8 @@ Major changes
 - Unknown requirements in the ``requires`` keyword will now be treated
   as unmet requirements, causing the rule to not be loaded. See
   :ref:`keyword_requires`.
+- The following sticky buffers for matching FTP headers have been implemented:
+    - ftp.command
 
 Removals
 ~~~~~~~~