diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index f183d6be7e..18039a3dec 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -29,6 +29,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
 * FEATURE: provide GOARCH=386 binaries for single-node VictoriaMetrics, vmagent, vmalert, vmauth, vmbackup and vmrestore components at [releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases). See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3661). Thanks to @denisgolius for [the pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3725).
 
 * BUGFIX: fix a bug, which could prevent background merges for the previous partitions until restart if the storage didn't have enough disk space for final deduplication and down-sampling.
+* BUGFIX: fix a bug, which could lead to increased CPU usage and disk IO usage when adding data to previous months and when the [deduplication](https://docs.victoriametrics.com/#deduplication) or [downsampling](https://docs.victoriametrics.com/#downsampling) is enabled. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3737).
 * BUGFIX: [VictoriaMetrics cluster](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html): propagate all the timeout-related errors from `vmstorage` to `vmselect` when `vmstorage`. Previously some timeout errors weren't returned from `vmselect` to `vmstorage`. Instead, `vmstorage` could log the error and close the connection to `vmselect`, so `vmselect` was logging cryptic errors such as `cannot execute funcName="..." on vmstorage "...": EOF`.
 * BUGFIX: [vmui](https://docs.victoriametrics.com/#vmui): add support for time zone selection for older versions of browsers. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3680).
 * BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): update API version for [ec2_sd_configs](https://docs.victoriametrics.com/sd_configs.html#ec2_sd_configs) to fix [the issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3700) with missing `__meta_ec2_availability_zone_id` attribute.