diff --git a/CHANGELOG.md b/CHANGELOG.md
index 128674d6a..63cf0163f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ IMPROVEMENTS:
  * core: A set of features (Autopilot) has been added to allow for automatic operator-friendly management of Nomad servers. For more information about Autopilot, see the [Autopilot Guide](https://www.nomadproject.io/guides/cluster/autopilot.html). [[GH-3670](https://github.com/hashicorp/nomad/pull/3670)]
  * core: Servers can now service client HTTP endpoints [[GH-3892](https://github.com/hashicorp/nomad/issues/3892)]
  * core: Servers can now retry connecting to Vault to verify tokens without requiring a SIGHUP to do so [[GH-3957](https://github.com/hashicorp/nomad/issues/3957)]
+ * core: Updated yamux library to pick up memory and CPU performance improvements [[GH-3980](https://github.com/hashicorp/nomad/issues/3980)]
  * cli: Node status and filesystem related commands do not require direct
    network access to the Nomad client nodes [[GH-3892](https://github.com/hashicorp/nomad/issues/3892)]
  * cli: Use ISO_8601 time format for cli output