diff --git a/docs/sources/helm-charts/mimir-distributed/release-notes/v5.3.md b/docs/sources/helm-charts/mimir-distributed/release-notes/v5.3.md
index 939267afdb8..f7a68839ade 100644
--- a/docs/sources/helm-charts/mimir-distributed/release-notes/v5.3.md
+++ b/docs/sources/helm-charts/mimir-distributed/release-notes/v5.3.md
@@ -27,3 +27,9 @@ Notable enhancements are as follows:
 
 - Added experimental feature for deploying [KEDA](https://keda.sh) ScaledObjects as part of the helm chart for the components: distributor, querier, query-frontend and ruler. For more details please see the values sections `kedaAutoscaling`, `distributor.kedaAutoscaling`, `ruler.kedaAutoscaling`, `query_frontend.kedaAutoscaling`, and `querier.kedaAutoscaling`, and the [Helm chart changelog](https://github.com/grafana/mimir/tree/main/operations/helm/charts/mimir-distributed/CHANGELOG.md).
 - Gateway: Added option for configuring whether or not NGINX binds IPv6: `gateway.nginx.config.enableIPv6`.
+
+## Bug fixes
+
+### 5.3.1
+
+- [PR 9215](https://github.com/grafana/mimir/pull/9215): Update GEM to v2.12.1