diff --git a/release-notes/3.9.12.md b/release-notes/3.9.12.md
index 9e47fe5692..8cb07a1924 100644
--- a/release-notes/3.9.12.md
+++ b/release-notes/3.9.12.md
@@ -38,6 +38,10 @@ Contributors are encouraged to update them together with their changes. This hel
 
 #### Enhancements
 
+ * `basic.*` AMQP 0-9-1 operations now consume fewer CPU cycles.
+
+   GitHub issue: [#3934](https://github.com/rabbitmq/rabbitmq-server/pull/3934)
+
  * More efficient (up to 67% more) user addition and updates, including during definition import.
 
    GitHub issue: [#3894](https://github.com/rabbitmq/rabbitmq-server/pull/3894)