diff --git a/CHANGELOG b/CHANGELOG
index c639308583016fd4af50ecdbd0ba704af3535e48..a88f34811e8f55a382a55f421c8cb7d7cdc72c98 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.1] - 2021-06-16
+### Changed
+ - Surface the alerting success threshold variable from the monitoring module.
+
 ## [3.1.0] - 2021-06-16
 ### Changed
  - Cloud Run service account is given permissions to access all Secret Manager secrets