diff --git a/HISTORY.md b/HISTORY.md
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+++ b/HISTORY.md
@@ -3,6 +3,7 @@
 ### Public API Change
 * Fix spelling so that API now has correctly spelled transaction state name `COMMITTED`, while the old misspelled `COMMITED` is still available as an alias.
 * Updated default format_version in BlockBasedTableOptions from 2 to 4. SST files generated with the new default can be read by RocksDB versions 5.16 and newer, and use more efficient encoding of keys in index blocks.
+* `Cache::Insert` now expects clients to pass in function objects implementing the `Cache::Deleter` interface as deleters instead of plain function pointers.
 
 ### Bug Fixes
 * Fix a bug where range tombstone blocks in ingested files were cached incorrectly during ingestion. If range tombstones were read from those incorrectly cached blocks, the keys they covered would be exposed.