diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9c4d8c67c..b5c3fc5b7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,11 +45,12 @@
 * [ENHANCEMENT] Distributor: Expose `cortex_label_size_bytes` native histogram metric. #6372
 * [ENHANCEMENT] Add new option `-server.grpc_server-num-stream-workers` to configure the number of worker goroutines that should be used to process incoming streams. #6386
 * [ENHANCEMENT] Distributor: Return HTTP 5XX instead of HTTP 4XX when instance limits are hit. #6358
-* [ENHANCEMENT] Ingester: Make sure unregistered ingester joining the ring after WAL replay #6277
+* [ENHANCEMENT] Ingester: Make sure unregistered ingester joining the ring after WAL replay. #6277
 * [BUGFIX] Runtime-config: Handle absolute file paths when working directory is not / #6224
 * [BUGFIX] Ruler: Allow rule evaluation to complete during shutdown. #6326
-* [BUGFIX] Ring: update ring with new ip address when instance is lost, rejoins, but heartbeat is disabled  #6271
-* [BUGFIX] ingester: Fix regression on usage of cortex_ingester_queried_chunks #6398
+* [BUGFIX] Ring: update ring with new ip address when instance is lost, rejoins, but heartbeat is disabled.  #6271
+* [BUGFIX] Ingester: Fix regression on usage of cortex_ingester_queried_chunks. #6398
+* [BUGFIX] Ingester: Fix possible race condition when `active series per LabelSet` is configured. #6409
 
 ## 1.18.1 2024-10-14