diff --git a/doc/release-notes/release-notes-2.1.1-1.md b/doc/release-notes/release-notes-2.1.1-1.md
index 618a08b94..5c764f24c 100644
--- a/doc/release-notes/release-notes-2.1.1-1.md
+++ b/doc/release-notes/release-notes-2.1.1-1.md
@@ -2,7 +2,7 @@ Notable changes
 ===============
 
 This release fixes a security issue described at
-https://z.cash/support/security/announcements/security-announcement-2020-02-05/ .
+https://z.cash/support/security/announcements/security-announcement-2020-02-06/ .
 
 This release also adds a `-maxtimeadjustment` option to set the maximum time, in
 seconds, by which the node's clock can be adjusted based on the clocks of its
@@ -11,6 +11,12 @@ This is a change from the previous behaviour, which was to adjust the clock by u
 to 70 minutes forward or backward. The maximum setting for this option is now
 25 minutes (1500 seconds).
 
+Fix for incorrect banning of nodes during syncing
+-------------------------------------------------
+After activation of the Blossom network upgrade, a node that is syncing the
+block chain from before Blossom would incorrectly ban peers that send it a
+Blossom transaction. This resulted in slower and less reliable syncing (#4283).
+
 Changelog
 =========