diff --git a/CHANGES b/CHANGES
index 93e1842c4e..b6f5147db4 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+6183.	[bug]		Fix a serve-stale bug where a delegation from cache
+			could be returned to the client. [GL #3950]
+
 6182.	[cleanup]	Remove configure checks for epoll, kqueue and
 			/dev/poll. [GL #4098]
 
diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index 9324b85735..adec5ced27 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -44,6 +44,10 @@ Bug Fixes
   for HTTP is removed from the configuration. That has been fixed.
   :gl:`#4071`
 
+- It could happen that after the :any:`stale-answer-client-timeout` duration,
+  a delegation from cache was returned to the client. This has now been fixed.
+  :gl:`#3950`
+
 Known Issues
 ~~~~~~~~~~~~