diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbecefb243..c61fc0efc3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ IMPROVEMENTS:
 * agent: Serf snapshots no longer save network coordinate information. This enables recovery from errors upon agent restart. [[GH-489](https://github.com/hashicorp/serf/issues/489)]
 * agent: Added defensive code to prevent out of range ping times from infecting network coordinates. Updates to the coordinate system with round trip times higher than 10 seconds will log an error but will be ignored.
 * agent: The agent now warns when there are extra unparsed command line arguments and refuses to start. [[GH-3397](https://github.com/hashicorp/consul/issues/3397)]
+* agent: Updated go-sockaddr library to get CoreOS route detection fixes and the new `mask` functionality. [[GH-3633](https://github.com/hashicorp/consul/issues/3633)]
 
 BUG FIXES: