diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c5534390..f390ed809 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## Unreleased
 
+* [BUGFIX] histograms: Fix possible data race when appending exemplars vs metrics gather. #1623
+
 ## 1.20.3 / 2024-09-05
 
 * [BUGFIX] histograms: Fix possible data race when appending exemplars. #1608