diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba5e92c482..a22e4424b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ IMPROVEMENTS:
 * dns: Introduced a new config param to limit the number of A/AAAA records returned. [[GH-3940](https://github.com/hashicorp/consul/issues/3940)]
 * agent: List of supported TLS cipher suites updated to include newer options, [[GH-3962](https://github.com/hashicorp/consul/pull/3962)]
 * server: Updated yamux library to pick up a performance improvement. [[GH-3982](https://github.com/hashicorp/consul/issues/3982)]
+* agent: WAN federation can now be disabled by setting the serf WAN port to -1. [[GH-3984](https://github.com/hashicorp/consul/issues/3984)]
 BUG FIXES:
 
 * agent: Fixed an issue where the coordinate update endpoint was not correctly parsing the ACL token. [[GH-3892](https://github.com/hashicorp/consul/issues/3892)]