diff --git a/1.40.0.md b/1.40.0.md
index 54cbb7e..423bce8 100644
--- a/1.40.0.md
+++ b/1.40.0.md
@@ -8,6 +8,8 @@ For when 1.40.0 is out.
 
 ## All platforms
 * `tailscale up --force-reauth` will now display a warning and 5 second countdown if you are connected over SSH over Tailscale, unless `--accept-risk=lose-ssh` is also given.
+* Tailscale now dynamically increases the buffer size for DERP relay messages based on the amount of available RAM ([#7776](https://github.com/tailscale/tailscale/pull/7776)).
+* Improvements were made to how Tailscale advertises available endpoints to reduce the likelihood of a spurious loss of direct connections ([#7877](https://github.com/tailscale/tailscale/pull/7877)).
 
 
 ## Linux