diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9076e978f..6ba9dc94a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@
 ## New features
 - feat: Added new tracing API (**HIGHLY EXPERIMENTAL**) supporting two RPC methods: `trace_block` and `trace_replayBlockTransactions` ([filecoin-project/lotus#11100](https://github.com/filecoin-project/lotus/pull/11100))
 
+## Improvements
+- fix: Add time slicing to splitstore purging step during compaction to reduce lock congestion [filecoin-project/lotus#11269](https://github.com/filecoin-project/lotus/pull/11269)
+
 # v1.23.3 / 2023-08-01
 
 This feature release of Lotus includes numerous improvements and enhancements for node operators, ETH RPC-providers and storage providers.
diff --git a/blockstore/splitstore/splitstore_compact.go b/blockstore/splitstore/splitstore_compact.go
index 6183fd9e5..a96e9e305 100644
--- a/blockstore/splitstore/splitstore_compact.go
+++ b/blockstore/splitstore/splitstore_compact.go
@@ -1377,7 +1377,7 @@ func (s *SplitStore) purge(coldr *ColdSetReader, checkpoint *Checkpoint, markSet
 	err := coldr.ForEach(func(c cid.Cid) error {
 		batch = append(batch, c)
 		if len(batch) == batchSize {
-			// add some throttling to the purge as this a very disk I/O heavy operation that
+			// add some time slicing to the purge as this a very disk I/O heavy operation that
 			// requires write access to txnLk that may starve other operations that require
 			// access to the blockstore.
 			if time.Since(now) > time.Second {