diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e44d9e9a76..741603e7724 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -77,6 +77,7 @@
 ### Mixin
 
 * [CHANGE] Dashboards: enabled reporting gRPC codes as `status_code` label in Mimir dashboards. In case of gRPC calls, the successful `status_code` label on `cortex_request_duration_seconds` and gRPC client request duration metrics has changed from 'success' and '2xx' to 'OK'. #6561
+* [CHANGE] Alerts: remove `MimirGossipMembersMismatch` alert and replace it with `MimirGossipMembersTooHigh` and `MimirGossipMembersTooLow` alerts that should have a higher signal-to-noise ratio. #6508
 * [ENHANCEMENT] Dashboards: Optionally show rejected requests on Mimir Writes dashboard. Useful when used together with "early request rejection" in ingester and distributor. #6132 #6556
 * [ENHANCEMENT] Alerts: added a critical alert for `CompactorSkippedBlocksWithOutOfOrderChunks` when multiple blocks are affected. #6410
 * [ENHANCEMENT] Dashboards: Added the min-replicas for autoscaling dashboards. #6528