diff --git a/Tailscale-1.16.md b/Tailscale-1.16.md
index 8564133..83e5628 100644
--- a/Tailscale-1.16.md
+++ b/Tailscale-1.16.md
@@ -8,6 +8,7 @@
 
 ### Linux
 - Support containers with !CAP_NET_RAW and !CAP_NET_ADMIN (like CircleCI runners)
+- service (portlist) scanning optimized; uses much less CPU on busy servers
 
 ### Windows
 - Move state to C:\ProgramData (also in 1.14.4)